diff --git a/src/content/market/author-base-client.ts b/src/content/market/author-base-client.ts
new file mode 100644
index 0000000..e723ddf
--- /dev/null
+++ b/src/content/market/author-base-client.ts
@@ -0,0 +1,122 @@
+import type { MarketRecord } from "./types";
+
+interface FetchResponseLike {
+  json(): Promise<unknown>;
+  ok: boolean;
+}
+
+type FetchLike = (
+  input: string,
+  init?: RequestInit
+) => Promise<FetchResponseLike>;
+
+interface AuthorBaseClientOptions {
+  baseUrl?: string;
+  fetchImpl?: FetchLike;
+  timeoutMs?: number;
+}
+
+export function createAuthorBaseClient(options: AuthorBaseClientOptions = {}) {
+  const baseUrl = options.baseUrl ?? resolveBaseUrl();
+  const fetchImpl = options.fetchImpl ?? defaultFetch;
+  const timeoutMs = options.timeoutMs ?? 8000;
+
+  return {
+    async loadAuthorBaseInfo(authorId: string): Promise<MarketRecord> {
+      const controller = new AbortController();
+      const timeoutId = setTimeout(() => controller.abort(), timeoutMs);
+
+      try {
+        const response = await fetchImpl(
+          buildAuthorBaseInfoUrl(authorId, baseUrl),
+          {
+            credentials: "include",
+            method: "GET",
+            signal: controller.signal
+          }
+        );
+
+        if (!response.ok) {
+          return buildFailedRecord(authorId, "request-failed");
+        }
+
+        return mapAuthorBaseInfoResponse(authorId, await response.json());
+      } catch (error) {
+        return buildFailedRecord(
+          authorId,
+          error instanceof Error && error.name === "AbortError"
+            ? "timeout"
+            : "request-failed"
+        );
+      } finally {
+        clearTimeout(timeoutId);
+      }
+    }
+  };
+}
+
+export function buildAuthorBaseInfoUrl(
+  authorId: string,
+  baseUrl: string
+): string {
+  const url = new URL("/gw/api/author/get_author_base_info", baseUrl);
+  url.searchParams.set("o_author_id", authorId);
+  url.searchParams.set("platform_source", "1");
+  url.searchParams.set("platform_channel", "1");
+  url.searchParams.set("recommend", "true");
+  url.searchParams.set("need_sec_uid", "true");
+  url.searchParams.set("need_linkage_info", "true");
+  return url.toString();
+}
+
+export function mapAuthorBaseInfoResponse(
+  authorId: string,
+  payload: unknown
+): MarketRecord {
+  if (!isRecord(payload)) {
+    return buildFailedRecord(authorId, "bad-response");
+  }
+
+  const authorName = readString(payload.nick_name);
+  if (!authorName) {
+    return buildFailedRecord(authorId, "missing-rate");
+  }
+
+  return {
+    authorId,
+    authorName,
+    status: "success"
+  };
+}
+
+function buildFailedRecord(
+  authorId: string,
+  failureReason: MarketRecord["failureReason"]
+): MarketRecord {
+  return {
+    authorId,
+    authorName: "",
+    failureReason,
+    status: "failed"
+  };
+}
+
+function readString(value: unknown): string | null {
+  return typeof value === "string" && value.trim() ? value.trim() : null;
+}
+
+function resolveBaseUrl(): string {
+  if (typeof location !== "undefined" && location.origin) {
+    return location.origin;
+  }
+
+  return "https://xingtu.cn";
+}
+
+async function defaultFetch(input: string, init?: RequestInit) {
+  return fetch(input, init);
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null;
+}
diff --git a/src/content/market/author-id-dialog.ts b/src/content/market/author-id-dialog.ts
new file mode 100644
index 0000000..9a79e77
--- /dev/null
+++ b/src/content/market/author-id-dialog.ts
@@ -0,0 +1,130 @@
+export function promptForAuthorIds(document: Document): Promise<string | null> {
+  return new Promise((resolve) => {
+    const overlay = document.createElement("div");
+    overlay.dataset.authorIdDialog = "overlay";
+    applyOverlayStyles(overlay);
+
+    const dialog = document.createElement("section");
+    applyDialogStyles(dialog);
+
+    const title = document.createElement("h2");
+    title.textContent = "按星图ID导出画像CSV";
+    applyTitleStyles(title);
+
+    const textarea = document.createElement("textarea");
+    textarea.dataset.authorIdDialogInput = "textarea";
+    textarea.placeholder = "每行一个星图ID，也支持逗号、空格分隔";
+    applyTextareaStyles(textarea);
+
+    const hint = document.createElement("p");
+    hint.textContent = "粘贴客户提供的达人星图ID，确认后将批量导出画像和商业能力数据。";
+    applyHintStyles(hint);
+
+    const actions = document.createElement("div");
+    applyActionsStyles(actions);
+
+    const cancelButton = document.createElement("button");
+    cancelButton.type = "button";
+    cancelButton.textContent = "取消";
+    applySecondaryButtonStyles(cancelButton);
+
+    const confirmButton = document.createElement("button");
+    confirmButton.type = "button";
+    confirmButton.textContent = "开始导出";
+    applyPrimaryButtonStyles(confirmButton);
+
+    actions.append(cancelButton, confirmButton);
+    dialog.append(title, hint, textarea, actions);
+    overlay.append(dialog);
+    document.body.appendChild(overlay);
+
+    const close = (value: string | null) => {
+      overlay.remove();
+      resolve(value);
+    };
+
+    cancelButton.addEventListener("click", () => close(null));
+    confirmButton.addEventListener("click", () => close(textarea.value));
+    overlay.addEventListener("click", (event) => {
+      if (event.target === overlay) {
+        close(null);
+      }
+    });
+    textarea.focus();
+  });
+}
+
+function applyOverlayStyles(overlay: HTMLElement): void {
+  overlay.style.position = "fixed";
+  overlay.style.inset = "0";
+  overlay.style.zIndex = "2147483647";
+  overlay.style.display = "flex";
+  overlay.style.alignItems = "center";
+  overlay.style.justifyContent = "center";
+  overlay.style.background = "rgba(15, 23, 42, 0.38)";
+}
+
+function applyDialogStyles(dialog: HTMLElement): void {
+  dialog.style.width = "520px";
+  dialog.style.maxWidth = "calc(100vw - 32px)";
+  dialog.style.background = "#ffffff";
+  dialog.style.borderRadius = "8px";
+  dialog.style.boxShadow = "0 18px 45px rgba(15, 23, 42, 0.22)";
+  dialog.style.padding = "20px";
+  dialog.style.boxSizing = "border-box";
+}
+
+function applyTitleStyles(title: HTMLElement): void {
+  title.style.margin = "0 0 8px";
+  title.style.fontSize = "18px";
+  title.style.fontWeight = "700";
+  title.style.color = "#1f2329";
+}
+
+function applyHintStyles(hint: HTMLElement): void {
+  hint.style.margin = "0 0 12px";
+  hint.style.fontSize = "13px";
+  hint.style.lineHeight = "20px";
+  hint.style.color = "#64748b";
+}
+
+function applyTextareaStyles(textarea: HTMLTextAreaElement): void {
+  textarea.style.width = "100%";
+  textarea.style.height = "220px";
+  textarea.style.resize = "vertical";
+  textarea.style.border = "1px solid #d0d7de";
+  textarea.style.borderRadius = "6px";
+  textarea.style.padding = "10px";
+  textarea.style.boxSizing = "border-box";
+  textarea.style.fontSize = "13px";
+  textarea.style.lineHeight = "20px";
+  textarea.style.fontFamily = "ui-monospace, SFMono-Regular, Menlo, monospace";
+  textarea.style.color = "#1f2329";
+}
+
+function applyActionsStyles(actions: HTMLElement): void {
+  actions.style.display = "flex";
+  actions.style.justifyContent = "flex-end";
+  actions.style.columnGap = "8px";
+  actions.style.marginTop = "14px";
+}
+
+function applyPrimaryButtonStyles(button: HTMLButtonElement): void {
+  button.style.height = "32px";
+  button.style.padding = "0 15px";
+  button.style.border = "1px solid #7f1d2d";
+  button.style.borderRadius = "8px";
+  button.style.background = "#7f1d2d";
+  button.style.color = "#ffffff";
+  button.style.fontWeight = "600";
+}
+
+function applySecondaryButtonStyles(button: HTMLButtonElement): void {
+  button.style.height = "32px";
+  button.style.padding = "0 15px";
+  button.style.border = "1px solid #d0d7de";
+  button.style.borderRadius = "8px";
+  button.style.background = "#ffffff";
+  button.style.color = "#1f2329";
+  button.style.fontWeight = "600";
+}
diff --git a/src/content/market/author-id-input.ts b/src/content/market/author-id-input.ts
new file mode 100644
index 0000000..fb0e665
--- /dev/null
+++ b/src/content/market/author-id-input.ts
@@ -0,0 +1,39 @@
+export interface ParsedAuthorIds {
+  duplicates: string[];
+  invalidTokens: string[];
+  ids: string[];
+}
+
+const AUTHOR_ID_PATTERN = /^\d{16,20}$/;
+
+export function parseAuthorIds(input: string): ParsedAuthorIds {
+  const ids: string[] = [];
+  const duplicates: string[] = [];
+  const invalidTokens: string[] = [];
+  const seen = new Set<string>();
+
+  input
+    .split(/[\s,，;；]+/)
+    .map((token) => token.trim())
+    .filter(Boolean)
+    .forEach((token) => {
+      if (!/^\d+$/.test(token) || !AUTHOR_ID_PATTERN.test(token)) {
+        invalidTokens.push(token);
+        return;
+      }
+
+      if (seen.has(token)) {
+        duplicates.push(token);
+        return;
+      }
+
+      seen.add(token);
+      ids.push(token);
+    });
+
+  return {
+    duplicates,
+    ids,
+    invalidTokens
+  };
+}
diff --git a/src/content/market/index.ts b/src/content/market/index.ts
index a97720c..6f54341 100644
--- a/src/content/market/index.ts
+++ b/src/content/market/index.ts
@@ -5,7 +5,10 @@ import {
   createAudienceProfileClient,
   type AudienceProfileRequestTarget
 } from "./audience-profile-client";
+import { createAuthorBaseClient } from "./author-base-client";
+import { parseAuthorIds } from "./author-id-input";
 import { createBusinessAbilityClient } from "./business-ability-client";
+import { promptForAuthorIds } from "./author-id-dialog";
 import { promptForBatchName } from "./batch-name-dialog";
 import { createBatchPayload, type BatchPayload } from "./batch-payload";
 import {
@@ -59,6 +62,7 @@ export interface CreateMarketControllerOptions {
   buildCsv?: (records: MarketRecord[]) => string;
   document: Document;
   getAuthState?: () => Promise<AuthStateValue>;
+  loadAuthorBaseInfo?: (authorId: string) => Promise<MarketRecord>;
   loadBusinessAbility?: (
     record: MarketRecord
   ) => Promise<BusinessAbilityResult>;
@@ -74,6 +78,7 @@ export interface CreateMarketControllerOptions {
     callback: MutationCallback
   ) => MutationObserverLike;
   onCsvReady?: (csv: string, filename?: string) => void;
+  promptAuthorIds?: () => Promise<string | null> | string | null;
   promptBatchName?: () => Promise<string | null> | string | null;
   resultStore?: ReturnType<typeof createMarketResultStore>;
   submitBatch?: (payload: BatchPayload) => Promise<unknown>;
@@ -83,6 +88,7 @@ export interface CreateMarketControllerOptions {
 export function createMarketController(options: CreateMarketControllerOptions) {
   const marketApiClient = createMarketApiClient();
   const audienceProfileClient = createAudienceProfileClient();
+  const authorBaseClient = createAuthorBaseClient();
   const businessAbilityClient = createBusinessAbilityClient();
   const sendRuntimeMessage = createRuntimeMessageSender();
   const resultStore = options.resultStore ?? createMarketResultStore();
@@ -95,6 +101,8 @@ export function createMarketController(options: CreateMarketControllerOptions) {
   const buildAudienceCsv = options.buildAudienceProfileCsv ?? buildAudienceProfileCsv;
   const loadAudienceProfile =
     options.loadAudienceProfile ?? audienceProfileClient.loadAudienceProfile;
+  const loadAuthorBaseInfo =
+    options.loadAuthorBaseInfo ?? authorBaseClient.loadAuthorBaseInfo;
   const loadBusinessAbility =
     options.loadBusinessAbility ?? businessAbilityClient.loadBusinessAbility;
   const getAuthState = options.getAuthState ?? (() => readAuthState(sendRuntimeMessage));
@@ -104,6 +112,9 @@ export function createMarketController(options: CreateMarketControllerOptions) {
   const promptBatchName =
     options.promptBatchName ??
     (() => promptForBatchName(options.document));
+  const promptAuthorIds =
+    options.promptAuthorIds ??
+    (() => promptForAuthorIds(options.document));
   const submitBatch =
     options.submitBatch ??
     ((payload: BatchPayload) =>
@@ -266,6 +277,49 @@ export function createMarketController(options: CreateMarketControllerOptions) {
         setToolbarBusyState(toolbar, false);
       }
     },
+    onExportAudienceProfileByIds: async () => {
+      const input = await promptAuthorIds();
+      if (input === null) {
+        return;
+      }
+
+      const parsed = parseAuthorIds(input);
+      if (parsed.ids.length === 0) {
+        setToolbarExportStatus(toolbar, "请输入有效的达人星图ID");
+        return;
+      }
+
+      setToolbarBusyState(toolbar, true);
+      try {
+        setToolbarExportStatus(
+          toolbar,
+          `识别 ${parsed.ids.length + parsed.duplicates.length + parsed.invalidTokens.length} 个，去重后 ${parsed.ids.length} 个，非法 ${parsed.invalidTokens.length} 个`
+        );
+
+        const rows: AudienceProfileExportRow[] = [];
+        for (let index = 0; index < parsed.ids.length; index += 1) {
+          const authorId = parsed.ids[index];
+          setToolbarExportStatus(
+            toolbar,
+            `按ID画像导出中 ${index + 1}/${parsed.ids.length}...`
+          );
+          rows.push(await loadAudienceProfileRowById(authorId));
+        }
+
+        options.onCsvReady?.(
+          buildAudienceCsv(rows),
+          buildAudienceProfileFilename(new Date(), "按ID导出")
+        );
+        setToolbarExportStatus(toolbar, "");
+      } catch (error) {
+        setToolbarExportStatus(
+          toolbar,
+          error instanceof Error ? error.message : "按ID导出失败，请稍后重试"
+        );
+      } finally {
+        setToolbarBusyState(toolbar, false);
+      }
+    },
     onSubmitBatch: async () => {
       syncSelectionStateFromDom();
       const exportTarget = readToolbarExportTarget(toolbar);
@@ -706,6 +760,107 @@ export function createMarketController(options: CreateMarketControllerOptions) {
     }
   }
 
+  async function loadAudienceProfileRowById(
+    authorId: string
+  ): Promise<AudienceProfileExportRow> {
+    const baseRecord = await loadAuthorBaseInfoSafe(authorId);
+    const recordForRequests = {
+      ...baseRecord,
+      authorName: baseRecord.authorName || authorId
+    };
+    const [profiles, businessAbility] = await Promise.all([
+      loadAudienceProfileSet(recordForRequests),
+      loadBusinessAbilitySafe(recordForRequests)
+    ]);
+    const failureReasons = collectAudienceProfileRowFailures(
+      baseRecord,
+      profiles,
+      businessAbility
+    );
+    const rowStatus =
+      failureReasons.length === 0
+        ? "成功"
+        : hasAudienceProfileRowSuccess(baseRecord, profiles, businessAbility)
+          ? "部分成功"
+          : "失败";
+    const authorName = baseRecord.authorName || "";
+
+    return {
+      businessAbility,
+      profiles,
+      record: {
+        ...recordForRequests,
+        exportFields: {
+          达人ID: authorId,
+          达人名称: authorName,
+          导出状态: rowStatus,
+          失败原因: failureReasons.join("; ")
+        }
+      }
+    };
+  }
+
+  async function loadAuthorBaseInfoSafe(authorId: string): Promise<MarketRecord> {
+    try {
+      return await loadAuthorBaseInfo(authorId);
+    } catch (error) {
+      return {
+        authorId,
+        authorName: "",
+        failureReason:
+          error instanceof Error ? "request-failed" : "request-failed",
+        status: "failed"
+      };
+    }
+  }
+
+  function collectAudienceProfileRowFailures(
+    baseRecord: MarketRecord,
+    profiles: AudienceProfileExportRow["profiles"],
+    businessAbility: BusinessAbilityResult
+  ): string[] {
+    const failures: string[] = [];
+    if (baseRecord.status === "failed") {
+      failures.push(`基础信息:${baseRecord.failureReason ?? "request-failed"}`);
+    }
+
+    Object.entries(profiles).forEach(([kind, profile]) => {
+      if (profile.status === "failed") {
+        failures.push(`${readAudienceProfileKindLabel(kind as AudienceProfileKind)}:${profile.failureReason ?? "request-failed"}`);
+      }
+    });
+
+    if (businessAbility.status === "failed") {
+      failures.push(`商业能力:${businessAbility.failureReason ?? "request-failed"}`);
+    }
+
+    return failures;
+  }
+
+  function hasAudienceProfileRowSuccess(
+    baseRecord: MarketRecord,
+    profiles: AudienceProfileExportRow["profiles"],
+    businessAbility: BusinessAbilityResult
+  ): boolean {
+    return (
+      baseRecord.status === "success" ||
+      businessAbility.status === "success" ||
+      Object.values(profiles).some((profile) => profile.status === "success")
+    );
+  }
+
+  function readAudienceProfileKindLabel(kind: AudienceProfileKind): string {
+    if (kind === "audience") {
+      return "观众画像";
+    }
+
+    if (kind === "fans") {
+      return "粉丝画像";
+    }
+
+    return "铁粉画像";
+  }
+
   async function prepareCurrentPageForExport(): Promise<void> {
     await runSyncCycle();
     await harvestCurrentPageForExport();
@@ -1415,11 +1570,15 @@ function hasRuntimeMessageSender(): boolean {
   );
 }
 
-function buildAudienceProfileFilename(date = new Date()): string {
+function buildAudienceProfileFilename(
+  date = new Date(),
+  label?: string
+): string {
   const year = date.getFullYear();
   const month = String(date.getMonth() + 1).padStart(2, "0");
   const day = String(date.getDate()).padStart(2, "0");
   const hour = String(date.getHours()).padStart(2, "0");
   const minute = String(date.getMinutes()).padStart(2, "0");
-  return `达人连接用户画像_${year}${month}${day}_${hour}${minute}.csv`;
+  const labelPart = label ? `_${label}` : "";
+  return `达人连接用户画像${labelPart}_${year}${month}${day}_${hour}${minute}.csv`;
 }
diff --git a/src/content/market/plugin-toolbar.ts b/src/content/market/plugin-toolbar.ts
index 60a69fe..3de6348 100644
--- a/src/content/market/plugin-toolbar.ts
+++ b/src/content/market/plugin-toolbar.ts
@@ -6,10 +6,12 @@ import type {
 export interface PluginToolbarHandlers {
   onExport(): Promise<void> | void;
   onExportAudienceProfile(): Promise<void> | void;
+  onExportAudienceProfileByIds(): Promise<void> | void;
   onSubmitBatch(): Promise<void> | void;
 }
 
 export interface PluginToolbarDom {
+  audienceProfileByIdExportButton: HTMLButtonElement;
   audienceProfileExportButton: HTMLButtonElement;
   batchSubmitButton: HTMLButtonElement;
   exportButton: HTMLButtonElement;
@@ -39,8 +41,16 @@ export function ensurePluginToolbar(
     "[data-plugin-toolbar='root']"
   ) as HTMLElement | null;
   if (existingRoot) {
-    ensureToolbarMounted(existingRoot, document);
-    return readToolbarDom(existingRoot);
+    if (
+      existingRoot.querySelector(
+        '[data-plugin-export-audience-profile-by-id="button"]'
+      )
+    ) {
+      ensureToolbarMounted(existingRoot, document);
+      return readToolbarDom(existingRoot);
+    }
+
+    existingRoot.remove();
   }
 
   const root = document.createElement("section");
@@ -74,6 +84,11 @@ export function ensurePluginToolbar(
   audienceProfileExportButton.dataset.pluginExportAudienceProfile = "button";
   audienceProfileExportButton.textContent = "导出画像CSV";
 
+  const audienceProfileByIdExportButton = document.createElement("button");
+  audienceProfileByIdExportButton.type = "button";
+  audienceProfileByIdExportButton.dataset.pluginExportAudienceProfileById = "button";
+  audienceProfileByIdExportButton.textContent = "按ID导出画像CSV";
+
   const batchSubmitButton = document.createElement("button");
   batchSubmitButton.type = "button";
   batchSubmitButton.dataset.pluginBatchSubmit = "button";
@@ -88,6 +103,7 @@ export function ensurePluginToolbar(
     exportCustomPagesInput,
     exportButton,
     audienceProfileExportButton,
+    audienceProfileByIdExportButton,
     batchSubmitButton,
     exportStatusText
   );
@@ -95,6 +111,7 @@ export function ensurePluginToolbar(
   document.body.appendChild(root);
   applyNativeControlStyles(document, {
     audienceProfileExportButton,
+    audienceProfileByIdExportButton,
     batchSubmitButton,
     exportButton,
     exportCustomPagesInput,
@@ -108,12 +125,16 @@ export function ensurePluginToolbar(
   audienceProfileExportButton.addEventListener("click", () => {
     void handlers.onExportAudienceProfile();
   });
+  audienceProfileByIdExportButton.addEventListener("click", () => {
+    void handlers.onExportAudienceProfileByIds();
+  });
   batchSubmitButton.addEventListener("click", () => {
     void handlers.onSubmitBatch();
   });
   exportRangeSelect.addEventListener("change", () => {
     syncCustomPagesInputVisibility({
       batchSubmitButton,
+      audienceProfileByIdExportButton,
       audienceProfileExportButton,
       exportButton,
       exportCustomPagesInput,
@@ -125,6 +146,7 @@ export function ensurePluginToolbar(
 
   const toolbarDom = {
     audienceProfileExportButton,
+    audienceProfileByIdExportButton,
     batchSubmitButton,
     exportButton,
     exportCustomPagesInput,
@@ -150,6 +172,9 @@ function appendOption(
 
 function readToolbarDom(root: HTMLElement): PluginToolbarDom {
   const toolbarDom = {
+    audienceProfileByIdExportButton: root.querySelector(
+      '[data-plugin-export-audience-profile-by-id="button"]'
+    ) as HTMLButtonElement,
     audienceProfileExportButton: root.querySelector(
       '[data-plugin-export-audience-profile="button"]'
     ) as HTMLButtonElement,
@@ -235,6 +260,7 @@ export function setToolbarBusyState(
 ): void {
   [
     toolbar.batchSubmitButton,
+    toolbar.audienceProfileByIdExportButton,
     toolbar.audienceProfileExportButton,
     toolbar.exportButton,
     toolbar.exportRangeSelect,
@@ -433,6 +459,7 @@ function applyNativeControlStyles(
   document: Document,
   controls: {
     audienceProfileExportButton: HTMLButtonElement;
+    audienceProfileByIdExportButton: HTMLButtonElement;
     batchSubmitButton: HTMLButtonElement;
     exportButton: HTMLButtonElement;
     exportCustomPagesInput: HTMLInputElement;
@@ -450,12 +477,14 @@ function applyNativeControlStyles(
   if (nativeButton) {
     controls.exportButton.className = nativeButton.className;
     controls.audienceProfileExportButton.className = nativeButton.className;
+    controls.audienceProfileByIdExportButton.className = nativeButton.className;
     controls.batchSubmitButton.className = nativeButton.className;
   }
 
   [
     controls.exportButton,
     controls.audienceProfileExportButton,
+    controls.audienceProfileByIdExportButton,
     controls.batchSubmitButton
   ].forEach((button) => {
     applyPrimaryButtonStyles(button);
@@ -509,6 +538,7 @@ function ensurePluginActionButtonTheme(document: Document): void {
   style.textContent = `
     [data-plugin-export="button"]:hover:not(:disabled),
     [data-plugin-export-audience-profile="button"]:hover:not(:disabled),
+    [data-plugin-export-audience-profile-by-id="button"]:hover:not(:disabled),
     [data-plugin-batch-submit="button"]:hover:not(:disabled) {
       background-color: #6d1627 !important;
       border-color: #6d1627 !important;
@@ -516,6 +546,7 @@ function ensurePluginActionButtonTheme(document: Document): void {
 
     [data-plugin-export="button"]:active:not(:disabled),
     [data-plugin-export-audience-profile="button"]:active:not(:disabled),
+    [data-plugin-export-audience-profile-by-id="button"]:active:not(:disabled),
     [data-plugin-batch-submit="button"]:active:not(:disabled) {
       background-color: #58111f !important;
       border-color: #58111f !important;
@@ -524,6 +555,7 @@ function ensurePluginActionButtonTheme(document: Document): void {
 
     [data-plugin-export="button"]:focus-visible,
     [data-plugin-export-audience-profile="button"]:focus-visible,
+    [data-plugin-export-audience-profile-by-id="button"]:focus-visible,
     [data-plugin-batch-submit="button"]:focus-visible {
       outline: none !important;
       box-shadow: 0 0 0 3px rgba(127, 29, 45, 0.2) !important;
@@ -531,6 +563,7 @@ function ensurePluginActionButtonTheme(document: Document): void {
 
     [data-plugin-export="button"]:disabled,
     [data-plugin-export-audience-profile="button"]:disabled,
+    [data-plugin-export-audience-profile-by-id="button"]:disabled,
     [data-plugin-batch-submit="button"]:disabled {
       background-color: #c89ca4 !important;
       border-color: #c89ca4 !important;
diff --git a/tests/author-base-client.test.ts b/tests/author-base-client.test.ts
new file mode 100644
index 0000000..e54f054
--- /dev/null
+++ b/tests/author-base-client.test.ts
@@ -0,0 +1,56 @@
+import { describe, expect, test, vi } from "vitest";
+
+import {
+  buildAuthorBaseInfoUrl,
+  createAuthorBaseClient,
+  mapAuthorBaseInfoResponse
+} from "../src/content/market/author-base-client";
+
+describe("author-base-client", () => {
+  test("builds Xingtu author base info url", () => {
+    expect(
+      buildAuthorBaseInfoUrl("6866044569306267651", "https://www.xingtu.cn")
+    ).toBe(
+      "https://www.xingtu.cn/gw/api/author/get_author_base_info?o_author_id=6866044569306267651&platform_source=1&platform_channel=1&recommend=true&need_sec_uid=true&need_linkage_info=true"
+    );
+  });
+
+  test("maps author nickname into a market record", () => {
+    expect(mapAuthorBaseInfoResponse("6866044569306267651", {
+      base_resp: { status_code: 0, status_message: "Success" },
+      nick_name: "小九儿"
+    })).toEqual({
+      authorId: "6866044569306267651",
+      authorName: "小九儿",
+      status: "success"
+    });
+  });
+
+  test("loads author base info from Xingtu", async () => {
+    const fetchImpl = vi.fn(async () => ({
+      json: async () => ({
+        base_resp: { status_code: 0, status_message: "Success" },
+        nick_name: "小九儿"
+      }),
+      ok: true
+    }));
+    const client = createAuthorBaseClient({
+      baseUrl: "https://www.xingtu.cn",
+      fetchImpl,
+      timeoutMs: 1000
+    });
+
+    await expect(client.loadAuthorBaseInfo("6866044569306267651")).resolves.toEqual({
+      authorId: "6866044569306267651",
+      authorName: "小九儿",
+      status: "success"
+    });
+    expect(fetchImpl).toHaveBeenCalledWith(
+      "https://www.xingtu.cn/gw/api/author/get_author_base_info?o_author_id=6866044569306267651&platform_source=1&platform_channel=1&recommend=true&need_sec_uid=true&need_linkage_info=true",
+      expect.objectContaining({
+        credentials: "include",
+        method: "GET"
+      })
+    );
+  });
+});
diff --git a/tests/author-id-input.test.ts b/tests/author-id-input.test.ts
new file mode 100644
index 0000000..75af90d
--- /dev/null
+++ b/tests/author-id-input.test.ts
@@ -0,0 +1,35 @@
+import { describe, expect, test } from "vitest";
+
+import { parseAuthorIds } from "../src/content/market/author-id-input";
+
+describe("author-id-input", () => {
+  test("parses newline comma and space separated Xingtu author ids", () => {
+    expect(parseAuthorIds(`
+      6866044569306267651
+      7040323176106033165,7088592143119286285
+      7222310247979810854
+    `)).toEqual({
+      duplicates: [],
+      ids: [
+        "6866044569306267651",
+        "7040323176106033165",
+        "7088592143119286285",
+        "7222310247979810854"
+      ],
+      invalidTokens: []
+    });
+  });
+
+  test("deduplicates ids and reports invalid tokens", () => {
+    expect(parseAuthorIds(`
+      6866044569306267651
+      bad-id
+      123
+      6866044569306267651
+    `)).toEqual({
+      duplicates: ["6866044569306267651"],
+      ids: ["6866044569306267651"],
+      invalidTokens: ["bad-id", "123"]
+    });
+  });
+});
diff --git a/tests/market-content-entry.test.ts b/tests/market-content-entry.test.ts
index 56bde20..13b5131 100644
--- a/tests/market-content-entry.test.ts
+++ b/tests/market-content-entry.test.ts
@@ -328,6 +328,9 @@ describe("market-content-entry", () => {
     expect(
       document.querySelector('[data-plugin-export-audience-profile="button"]')
     ).not.toBeNull();
+    expect(
+      document.querySelector('[data-plugin-export-audience-profile-by-id="button"]')
+    ).not.toBeNull();
     expect(document.querySelector('[data-plugin-batch-submit="button"]')).not.toBeNull();
     expect(document.querySelector('[data-plugin-export-status="text"]')).not.toBeNull();
 
@@ -340,12 +343,17 @@ describe("market-content-entry", () => {
     const audienceProfileExportButton = document.querySelector(
       '[data-plugin-export-audience-profile="button"]'
     ) as HTMLButtonElement | null;
+    const audienceProfileByIdExportButton = document.querySelector(
+      '[data-plugin-export-audience-profile-by-id="button"]'
+    ) as HTMLButtonElement | null;
     expect(exportButton?.style.backgroundColor).toBe("rgb(127, 29, 45)");
     expect(batchSubmitButton?.style.backgroundColor).toBe("rgb(127, 29, 45)");
     expect(audienceProfileExportButton?.style.backgroundColor).toBe("rgb(127, 29, 45)");
+    expect(audienceProfileByIdExportButton?.style.backgroundColor).toBe("rgb(127, 29, 45)");
     expect(exportButton?.style.color).toBe("rgb(255, 255, 255)");
     expect(batchSubmitButton?.style.color).toBe("rgb(255, 255, 255)");
     expect(audienceProfileExportButton?.style.color).toBe("rgb(255, 255, 255)");
+    expect(audienceProfileByIdExportButton?.style.color).toBe("rgb(255, 255, 255)");
   });
 
   test("remounts the plugin action bar when the native market action row appears later", async () => {
@@ -1698,6 +1706,87 @@ describe("market-content-entry", () => {
     );
   });
 
+  test("audience profile export by id loads pasted creators without page selection", async () => {
+    document.body.innerHTML = buildRealMarketFixture([
+      { authorId: "111", authorName: "达人 A", price21To60s: "¥11,000" }
+    ]);
+    const buildAudienceProfileCsv = vi.fn(() => "profile-csv");
+    const loadAuthorBaseInfo = vi.fn(async (authorId: string) => ({
+      authorId,
+      authorName: authorId === "6866044569306267651" ? "小九儿" : "达人 B",
+      status: "success" as const
+    }));
+    const loadBusinessAbility = vi.fn(async () => ({
+      estimates: {},
+      status: "success" as const,
+      videos: {}
+    }));
+    const loadAudienceProfile = vi.fn(async () => ({
+      age: [{ label: "31-40", value: "60%" }],
+      crowd: [{ label: "都市蓝领", value: "80%" }],
+      cityTier: [{ label: "一线城市", value: "90%" }],
+      gender: [{ label: "男性", value: "60%" }],
+      status: "success" as const
+    }));
+    const onCsvReady = vi.fn();
+
+    const { createMarketController } = await import("../src/content/market/index");
+    const controller = trackController(createMarketController({
+      buildAudienceProfileCsv,
+      document,
+      loadAuthorBaseInfo,
+      loadBusinessAbility,
+      loadAudienceProfile,
+      loadAuthorMetrics: async () => ({
+        success: false,
+        reason: "request-failed"
+      }),
+      onCsvReady,
+      promptAuthorIds: () => `
+        6866044569306267651
+        7040323176106033165
+        6866044569306267651
+        bad-id
+      `,
+      window
+    }));
+
+    await controller.ready;
+    click('[data-plugin-export-audience-profile-by-id="button"]');
+    await waitForMockCall(buildAudienceProfileCsv, 40, 50);
+
+    expect(loadAuthorBaseInfo.mock.calls.map(([authorId]) => authorId)).toEqual([
+      "6866044569306267651",
+      "7040323176106033165"
+    ]);
+    expect(loadAudienceProfile).toHaveBeenCalledTimes(6);
+    expect(loadBusinessAbility).toHaveBeenCalledTimes(2);
+    expect(buildAudienceProfileCsv).toHaveBeenCalledWith([
+      expect.objectContaining({
+        record: expect.objectContaining({
+          authorId: "6866044569306267651",
+          authorName: "小九儿",
+          exportFields: {
+            达人ID: "6866044569306267651",
+            达人名称: "小九儿",
+            导出状态: "成功",
+            失败原因: ""
+          }
+        })
+      }),
+      expect.objectContaining({
+        record: expect.objectContaining({
+          authorId: "7040323176106033165",
+          authorName: "达人 B"
+        })
+      })
+    ]);
+    expect(onCsvReady).toHaveBeenCalledWith(
+      "profile-csv",
+      expect.stringMatching(/^达人连接用户画像_按ID导出_\d{8}_\d{4}\.csv$/)
+    );
+  });
+
   test(
     "selected export keeps a generic loading status while exporting the default paged range",
     async () => {