diff --git a/packages-user/client-base/src/use/hotkey.ts b/packages-user/client-base/src/use/hotkey.ts
index 75e7f71..448b2bb 100644
--- a/packages-user/client-base/src/use/hotkey.ts
+++ b/packages-user/client-base/src/use/hotkey.ts
@@ -13,6 +13,8 @@ class HotkeyUsing implements IHotkeyUsing {
     private keyScope: symbol | null = null;
     /** 当前的按键实现对象 */
     private impl: Map<string, (info: IHotkeyEmitInfo) => void> = new Map();
+    /** 当前设置的 `when` 判断函数 */
+    private whenFunc: (() => boolean) | null = null;
 
     constructor(
         readonly system: IHotkeySystem,
@@ -26,6 +28,7 @@ class HotkeyUsing implements IHotkeyUsing {
             const scope = system.enterScope(clearImpl);
             this.keyScope = scope;
             resolve(scope);
+            if (this.whenFunc) system.when(this.whenFunc);
             for (const [command, func] of this.impl) {
                 system.implement(command, func);
             }
@@ -45,6 +48,15 @@ class HotkeyUsing implements IHotkeyUsing {
         return this.scopePromise;
     }
 
+    when(func: () => boolean): this {
+        if (this.mounted) {
+            this.system.when(func);
+        } else {
+            this.whenFunc = func;
+        }
+        return this;
+    }
+
     implement(command: string, func: (info: IHotkeyEmitInfo) => void): this {
         if (this.mounted) {
             this.system.implement(command, func);
diff --git a/packages-user/client-base/src/use/types.ts b/packages-user/client-base/src/use/types.ts
index b92eb61..4a7f25d 100644
--- a/packages-user/client-base/src/use/types.ts
+++ b/packages-user/client-base/src/use/types.ts
@@ -6,6 +6,12 @@ export interface IHotkeyUsing {
      */
     scope(): Promise<symbol>;
 
+    /**
+     * 设置当前的按键判断函数，当函数返回 `true` 时，按键才会真正生效
+     * @param func 判断函数，返回当前是否应该生效
+     */
+    when(func: () => boolean): this;
+
     /**
      * 实现按键指令
      * @param command 按键指令