diff --git a/Changelog.md b/Changelog.md
index d84d3a7ab..59bcb859a 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -11,6 +11,7 @@
 - 修复 代理 在全局模式下无法展开节点组
 - 修复 自定义 CSS 无法修改编辑器字体和字号的问题
 - 修复恢复备份的同时修改配置，可能导致配置丢失或错乱的问题
+- 修复切换规则模式与配置变更并发时可能丢失或错乱的问题
 
 **🐧 Linux**
 
diff --git a/src-tauri/src/feat/clash.rs b/src-tauri/src/feat/clash.rs
index 9b1d84b3c..853b35481 100644
--- a/src-tauri/src/feat/clash.rs
+++ b/src-tauri/src/feat/clash.rs
@@ -67,11 +67,14 @@ pub async fn change_clash_mode(mode: String) -> Result<(), String> {
     }
 
     let clash = Config::clash().await;
-    clash.edit_draft(|d| d.patch_config(&mapping));
-    clash.apply();
-
-    let clash_data = clash.data_arc();
-    if clash_data.save_config().await.is_ok() {
+    // Serialize with patch transactions: an unlocked commit can flush a staged draft mid-rollback.
+    let save_result = {
+        let _config_write = Config::lock_config_write().await;
+        clash.edit_draft(|d| d.patch_config(&mapping));
+        clash.apply();
+        clash.data_arc().save_config().await
+    };
+    if save_result.is_ok() {
         announce(Refresh::Clash);
         tray::Tray::global().update_menu_and_icon().await;
     }