diff --git a/static/src/app/methods/ui.ts b/static/src/app/methods/ui.ts
index c7b4698..ef53740 100644
--- a/static/src/app/methods/ui.ts
+++ b/static/src/app/methods/ui.ts
@@ -2277,15 +2277,22 @@ export const uiMethods = {
           if (name) sessions[name] = {};
         }
         this.terminalSessions = sessions;
-        // 自动打开/关闭终端面板
+        // 自动打开/关闭终端面板（仅在数量变化时触发一次）
         const personalizationStore = usePersonalizationStore();
         const autoOpen = personalizationStore.form.auto_open_terminal_panel !== false;
-        const hasTerminals = Object.keys(sessions).length > 0;
-        if (autoOpen && hasTerminals && !this.terminalPanelOpen) {
-          this.toggleTerminalPanel();
-        } else if (autoOpen && !hasTerminals && this.terminalPanelOpen) {
-          this.closeTerminalPanel();
+        const count = Object.keys(sessions).length;
+        const prevCount = this.previousTerminalCount ?? 0;
+        if (autoOpen) {
+          // 终端从无到有 → 如果面板没开，打开一次
+          if (prevCount === 0 && count > 0 && !this.terminalPanelOpen) {
+            this.toggleTerminalPanel();
+          }
+          // 终端从有到无 → 如果面板开着，关闭一次
+          else if (prevCount > 0 && count === 0 && this.terminalPanelOpen) {
+            this.closeTerminalPanel();
+          }
         }
+        this.previousTerminalCount = count;
       }
     } catch {}
   },
diff --git a/static/src/app/state.ts b/static/src/app/state.ts
index d9b5274..74c53a9 100644
--- a/static/src/app/state.ts
+++ b/static/src/app/state.ts
@@ -54,6 +54,8 @@ export function dataState() {
     terminalSessionLogs: {} as Record<string, string>,
     terminalHydrated: {} as Record<string, boolean>,
     terminalCount: 0,
+    // 上一次检测到的终端数量，用于判断 0→>0（自动开）和 >0→0（自动关）
+    previousTerminalCount: 0,
     // 右侧面板上下分割比例（终端占比 0.15~0.85）
     rightSplitRatio: 0.5,
     // 输入区动态保留高度（用于同步扩大消息区可滚动范围）