diff --git a/extensions/qqbot/src/config.test.ts b/extensions/qqbot/src/config.test.ts
index b6cf4a82840..55eda7e3b37 100644
--- a/extensions/qqbot/src/config.test.ts
+++ b/extensions/qqbot/src/config.test.ts
@@ -5,7 +5,11 @@ import { validateJsonSchemaValue } from "../../../src/plugins/schema-validator.j
 import { qqbotPlugin } from "./channel.js";
 import { qqbotSetupPlugin } from "./channel.setup.js";
 import { QQBotConfigSchema } from "./config-schema.js";
-import { DEFAULT_ACCOUNT_ID, resolveQQBotAccount } from "./config.js";
+import {
+  DEFAULT_ACCOUNT_ID,
+  resolveDefaultQQBotAccountId,
+  resolveQQBotAccount,
+} from "./config.js";
 
 describe("qqbot config", () => {
   it("accepts top-level speech overrides in the manifest schema", () => {
@@ -62,6 +66,23 @@ describe("qqbot config", () => {
     expect(result.ok).toBe(true);
   });
 
+  it("honors configured defaultAccount when resolving the default QQ Bot account id", () => {
+    const cfg = {
+      channels: {
+        qqbot: {
+          defaultAccount: "bot2",
+          accounts: {
+            bot2: {
+              appId: "654321",
+            },
+          },
+        },
+      },
+    } as OpenClawConfig;
+
+    expect(resolveDefaultQQBotAccountId(cfg)).toBe("bot2");
+  });
+
   it("accepts SecretRef-backed credentials in the runtime schema", () => {
     const parsed = QQBotConfigSchema.safeParse({
       defaultAccount: "bot2",
@@ -142,6 +163,30 @@ describe("qqbot config", () => {
     expect(resolved.config.upgradeMode).toBe("hot-reload");
   });
 
+  it("uses configured defaultAccount when accountId is omitted", () => {
+    const cfg = {
+      channels: {
+        qqbot: {
+          defaultAccount: "bot2",
+          accounts: {
+            bot2: {
+              appId: "654321",
+              clientSecret: "secret-value",
+              name: "Bot Two",
+            },
+          },
+        },
+      },
+    } as OpenClawConfig;
+
+    const resolved = resolveQQBotAccount(cfg);
+
+    expect(resolved.accountId).toBe("bot2");
+    expect(resolved.appId).toBe("654321");
+    expect(resolved.clientSecret).toBe("secret-value");
+    expect(resolved.name).toBe("Bot Two");
+  });
+
   it("rejects unresolved SecretRefs on runtime resolution", () => {
     const cfg = {
       channels: {
diff --git a/extensions/qqbot/src/config.ts b/extensions/qqbot/src/config.ts
index 5ec3f5d7b1a..872933a4f9d 100644
--- a/extensions/qqbot/src/config.ts
+++ b/extensions/qqbot/src/config.ts
@@ -11,6 +11,15 @@ export const DEFAULT_ACCOUNT_ID = "default";
 
 interface QQBotChannelConfig extends QQBotAccountConfig {
   accounts?: Record<string, QQBotAccountConfig>;
+  defaultAccount?: string;
+}
+
+function normalizeConfiguredDefaultAccountId(raw: unknown): string | null {
+  if (typeof raw !== "string") {
+    return null;
+  }
+  const trimmed = raw.trim().toLowerCase();
+  return trimmed ? trimmed : null;
 }
 
 function normalizeQQBotAccountConfig(account: QQBotAccountConfig | undefined): QQBotAccountConfig {
@@ -51,6 +60,14 @@ export function listQQBotAccountIds(cfg: OpenClawConfig): string[] {
 /** Resolve the default QQBot account ID. */
 export function resolveDefaultQQBotAccountId(cfg: OpenClawConfig): string {
   const qqbot = cfg.channels?.qqbot as QQBotChannelConfig | undefined;
+  const configuredDefaultAccountId = normalizeConfiguredDefaultAccountId(qqbot?.defaultAccount);
+  if (
+    configuredDefaultAccountId &&
+    (configuredDefaultAccountId === DEFAULT_ACCOUNT_ID ||
+      Boolean(qqbot?.accounts?.[configuredDefaultAccountId]?.appId))
+  ) {
+    return configuredDefaultAccountId;
+  }
   if (qqbot?.appId || process.env.QQBOT_APP_ID) {
     return DEFAULT_ACCOUNT_ID;
   }
@@ -69,7 +86,7 @@ export function resolveQQBotAccount(
   accountId?: string | null,
   opts?: { allowUnresolvedSecretRef?: boolean },
 ): ResolvedQQBotAccount {
-  const resolvedAccountId = accountId ?? DEFAULT_ACCOUNT_ID;
+  const resolvedAccountId = accountId ?? resolveDefaultQQBotAccountId(cfg);
   const qqbot = cfg.channels?.qqbot as QQBotChannelConfig | undefined;
 
   let accountConfig: QQBotAccountConfig = {};
diff --git a/extensions/qqbot/src/proactive.test.ts b/extensions/qqbot/src/proactive.test.ts
new file mode 100644
index 00000000000..1b46cebfff2
--- /dev/null
+++ b/extensions/qqbot/src/proactive.test.ts
@@ -0,0 +1,64 @@
+import type { OpenClawConfig } from "openclaw/plugin-sdk/config-runtime";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { sendProactive } from "./proactive.js";
+
+const apiMocks = vi.hoisted(() => ({
+  getAccessToken: vi.fn(),
+  sendProactiveC2CMessage: vi.fn(),
+}));
+
+vi.mock("./api.js", () => ({
+  getAccessToken: apiMocks.getAccessToken,
+  sendProactiveC2CMessage: apiMocks.sendProactiveC2CMessage,
+  sendProactiveGroupMessage: vi.fn(),
+  sendChannelMessage: vi.fn(),
+  sendC2CImageMessage: vi.fn(),
+  sendGroupImageMessage: vi.fn(),
+}));
+
+describe("qqbot proactive sends", () => {
+  beforeEach(() => {
+    apiMocks.getAccessToken.mockReset();
+    apiMocks.sendProactiveC2CMessage.mockReset();
+  });
+
+  it("uses configured defaultAccount when accountId is omitted", async () => {
+    apiMocks.getAccessToken.mockResolvedValue("access-token");
+    apiMocks.sendProactiveC2CMessage.mockResolvedValue({
+      id: "msg-1",
+      timestamp: 123,
+    });
+
+    const cfg = {
+      channels: {
+        qqbot: {
+          defaultAccount: "bot2",
+          accounts: {
+            bot2: {
+              appId: "654321",
+              clientSecret: "secret-value",
+            },
+          },
+        },
+      },
+    } as OpenClawConfig;
+
+    const result = await sendProactive(
+      {
+        to: "openid-1",
+        text: "hello",
+      },
+      cfg,
+    );
+
+    expect(apiMocks.getAccessToken).toHaveBeenCalledWith("654321", "secret-value");
+    expect(apiMocks.sendProactiveC2CMessage).toHaveBeenCalledWith(
+      "654321",
+      "access-token",
+      "openid-1",
+      "hello",
+    );
+    expect(result.success).toBe(true);
+    expect(result.messageId).toBe("msg-1");
+  });
+});
diff --git a/extensions/qqbot/src/proactive.ts b/extensions/qqbot/src/proactive.ts
index fda9affeace..cd3764c90f2 100644
--- a/extensions/qqbot/src/proactive.ts
+++ b/extensions/qqbot/src/proactive.ts
@@ -58,7 +58,7 @@ import {
   sendC2CImageMessage,
   sendGroupImageMessage,
 } from "./api.js";
-import { resolveQQBotAccount } from "./config.js";
+import { resolveDefaultQQBotAccountId, resolveQQBotAccount } from "./config.js";
 
 /** Look up a known user entry (adapter for the old proactive API shape). */
 export function getKnownUser(
@@ -98,7 +98,13 @@ export async function sendProactive(
   options: ProactiveSendOptions,
   cfg: OpenClawConfig,
 ): Promise<ProactiveSendResult> {
-  const { to, text, type = "c2c", imageUrl, accountId = "default" } = options;
+  const {
+    to,
+    text,
+    type = "c2c",
+    imageUrl,
+    accountId = resolveDefaultQQBotAccountId(cfg),
+  } = options;
 
   const account = resolveQQBotAccount(cfg, accountId);
 
@@ -174,7 +180,7 @@ export async function sendBulkProactiveMessage(
   text: string,
   type: "c2c" | "group",
   cfg: OpenClawConfig,
-  accountId = "default",
+  accountId = resolveDefaultQQBotAccountId(cfg),
 ): Promise<Array<{ to: string; result: ProactiveSendResult }>> {
   const results: Array<{ to: string; result: ProactiveSendResult }> = [];