diff --git a/js/qdreader_sign_autman.js b/js/qdreader_sign_autman.js
index d08ba31..217c125 100644
--- a/js/qdreader_sign_autman.js
+++ b/js/qdreader_sign_autman.js
@@ -4,7 +4,7 @@
 //[author: Hermes]
 //[service: BOSS]
 //[class: 工具类]
-//[version: 2.4.0]
+//[version: 2.4.1]
 //[platform: web,qq,wx,tg,tb,fs,we]
 //[public: false]
 //[price: 0]
@@ -242,7 +242,7 @@ function contentText() {
 }
 function usage() {
     return [
-        "启点读书签到插件 v2.4.0",
+        "启点读书签到插件 v2.4.1",
         "【一级菜单】",
         "账号管理：启点账号",
         "执行查询：启点查询",
@@ -653,6 +653,11 @@ function handleSaveCookie(arg, store, bind) {
         if (!uid) return { ok: false, text: "无法从 Cookie 识别 uid。请确认 QX 抓的是启点读书福利中心 getlogininfo 请求，Cookie 内应包含 QDHeader 或 uid。", uids: savedUids }
         var isNew = !store[uid]
         var oldOwner = bind[uid] || ""
+        if (!store[uid] && oldOwner && oldOwner !== me) {
+            delete bind[uid]
+            oldOwner = ""
+            lines.push("检测到 uid: " + uid + " 只有旧绑定没有CK，已自动清理残留绑定")
+        }
         if (store[uid] && oldOwner && me && oldOwner !== me) {
             lines.push("无权更新 uid: " + uid + "（该账号已绑定其他用户）")
             continue
diff --git a/plugins/qdreader/qdreader_sign_autman.js b/plugins/qdreader/qdreader_sign_autman.js
index d08ba31..217c125 100644
--- a/plugins/qdreader/qdreader_sign_autman.js
+++ b/plugins/qdreader/qdreader_sign_autman.js
@@ -4,7 +4,7 @@
 //[author: Hermes]
 //[service: BOSS]
 //[class: 工具类]
-//[version: 2.4.0]
+//[version: 2.4.1]
 //[platform: web,qq,wx,tg,tb,fs,we]
 //[public: false]
 //[price: 0]
@@ -242,7 +242,7 @@ function contentText() {
 }
 function usage() {
     return [
-        "启点读书签到插件 v2.4.0",
+        "启点读书签到插件 v2.4.1",
         "【一级菜单】",
         "账号管理：启点账号",
         "执行查询：启点查询",
@@ -653,6 +653,11 @@ function handleSaveCookie(arg, store, bind) {
         if (!uid) return { ok: false, text: "无法从 Cookie 识别 uid。请确认 QX 抓的是启点读书福利中心 getlogininfo 请求，Cookie 内应包含 QDHeader 或 uid。", uids: savedUids }
         var isNew = !store[uid]
         var oldOwner = bind[uid] || ""
+        if (!store[uid] && oldOwner && oldOwner !== me) {
+            delete bind[uid]
+            oldOwner = ""
+            lines.push("检测到 uid: " + uid + " 只有旧绑定没有CK，已自动清理残留绑定")
+        }
         if (store[uid] && oldOwner && me && oldOwner !== me) {
             lines.push("无权更新 uid: " + uid + "（该账号已绑定其他用户）")
             continue
diff --git a/tests/qdreader_plugin.test.mjs b/tests/qdreader_plugin.test.mjs
index fa22712..d7121eb 100644
--- a/tests/qdreader_plugin.test.mjs
+++ b/tests/qdreader_plugin.test.mjs
@@ -166,6 +166,29 @@ test('quick submit can bind user from alternate Autman sender fields', () => {
   assert.equal(JSON.parse(r.store.qdreader_user_bind_json)['12345'], 'sender-42');
 });
 
+test('quick submit can re-add cookie when old binding remains but cookie was manually deleted', () => {
+  const store = {
+    qdreader_cookie_json: JSON.stringify({}),
+    qdreader_user_bind_json: JSON.stringify({ '12345': 'old-user' }),
+  };
+  const r = runPlugin({ content: '启点ck ' + cookie, store, userId: 'user-a', listens: ['n'] });
+  assert.match(r.replies.join('\n'), /已自动清理残留绑定/);
+  assert.match(r.replies.join('\n'), /CK新增成功/);
+  assert.equal(JSON.parse(r.store.qdreader_cookie_json)['12345'], cookie);
+  assert.equal(JSON.parse(r.store.qdreader_user_bind_json)['12345'], 'user-a');
+});
+
+test('quick submit still rejects overwrite when cookie and another owner binding both exist', () => {
+  const store = {
+    qdreader_cookie_json: JSON.stringify({ '12345': cookie }),
+    qdreader_user_bind_json: JSON.stringify({ '12345': 'old-user' }),
+  };
+  const r = runPlugin({ content: '启点ck ' + cookie.replace('qdh=qdh', 'qdh=newqdh'), store, userId: 'user-a', listens: ['n'] });
+  assert.match(r.replies.join('\n'), /无权更新 uid: 12345/);
+  assert.equal(JSON.parse(r.store.qdreader_cookie_json)['12345'], cookie);
+  assert.equal(JSON.parse(r.store.qdreader_user_bind_json)['12345'], 'old-user');
+});
+
 test('quick submit rejects save when Autman JS has no user identity', () => {
   const r = runPlugin({
     content: '启点ck ' + cookie,