diff --git a/extensions/qqbot/src/channel.setup.ts b/extensions/qqbot/src/channel.setup.ts
index 269649f3b43..8c4c3deb3ce 100644
--- a/extensions/qqbot/src/channel.setup.ts
+++ b/extensions/qqbot/src/channel.setup.ts
@@ -156,7 +156,8 @@ export const qqbotSetupPlugin: ChannelPlugin<ResolvedQQBotAccount> = {
     }),
   },
   setup: {
-    resolveAccountId: ({ accountId }) => accountId?.trim().toLowerCase() || DEFAULT_ACCOUNT_ID,
+    resolveAccountId: ({ cfg, accountId }) =>
+      accountId?.trim().toLowerCase() || resolveDefaultQQBotAccountId(cfg),
     applyAccountName: ({ cfg, accountId, name }) =>
       applyAccountNameToChannelSection({
         cfg,
diff --git a/extensions/qqbot/src/channel.ts b/extensions/qqbot/src/channel.ts
index bbd36a534a7..913f55915a0 100644
--- a/extensions/qqbot/src/channel.ts
+++ b/extensions/qqbot/src/channel.ts
@@ -109,7 +109,8 @@ export const qqbotPlugin: ChannelPlugin<ResolvedQQBotAccount> = {
         .map((entry) => entry.toUpperCase()),
   },
   setup: {
-    resolveAccountId: ({ accountId }) => accountId?.trim().toLowerCase() || DEFAULT_ACCOUNT_ID,
+    resolveAccountId: ({ cfg, accountId }) =>
+      accountId?.trim().toLowerCase() || resolveDefaultQQBotAccountId(cfg),
     applyAccountName: ({ cfg, accountId, name }) =>
       applyAccountNameToChannelSection({
         cfg,
diff --git a/extensions/qqbot/src/config.test.ts b/extensions/qqbot/src/config.test.ts
index 55eda7e3b37..23544a15051 100644
--- a/extensions/qqbot/src/config.test.ts
+++ b/extensions/qqbot/src/config.test.ts
@@ -345,6 +345,27 @@ describe("qqbot config", () => {
     });
   });
 
+  it("uses configured defaultAccount when runtime setup accountId is omitted", () => {
+    const runtimeSetup = qqbotPlugin.setup;
+    expect(runtimeSetup).toBeDefined();
+
+    expect(
+      runtimeSetup!.resolveAccountId?.({
+        cfg: {
+          channels: {
+            qqbot: {
+              defaultAccount: "bot2",
+              accounts: {
+                bot2: { appId: "123456" },
+              },
+            },
+          },
+        } as OpenClawConfig,
+        accountId: undefined,
+      } as never),
+    ).toBe("bot2");
+  });
+
   it("rejects --use-env for named accounts across setup paths", () => {
     const runtimeSetup = qqbotPlugin.setup;
     const lightweightSetup = qqbotSetupPlugin.setup;
diff --git a/extensions/qqbot/src/setup.test.ts b/extensions/qqbot/src/setup.test.ts
index 75ea18cd7cb..985d423cb7f 100644
--- a/extensions/qqbot/src/setup.test.ts
+++ b/extensions/qqbot/src/setup.test.ts
@@ -127,4 +127,25 @@ describe("qqbot setup", () => {
       } as never),
     ).toBe("bot2");
   });
+
+  it("uses configured defaultAccount when setup accountId is omitted", () => {
+    const setup = qqbotSetupPlugin.setup;
+    expect(setup).toBeDefined();
+
+    expect(
+      setup!.resolveAccountId?.({
+        cfg: {
+          channels: {
+            qqbot: {
+              defaultAccount: "bot2",
+              accounts: {
+                bot2: { appId: "123456" },
+              },
+            },
+          },
+        } as OpenClawConfig,
+        accountId: undefined,
+      } as never),
+    ).toBe("bot2");
+  });
 });