diff --git a/runtime/main/extend/systemplugin/window.js b/runtime/main/extend/systemplugin/window.js
index fb8ebedc..7a9446f1 100644
--- a/runtime/main/extend/systemplugin/window.js
+++ b/runtime/main/extend/systemplugin/window.js
@@ -466,6 +466,18 @@ export function mockWindow() {
         })
       }
     },
+    ToggleShownStateForAllAppWindows: function (...args) {
+      console.warn("window.ToggleShownStateForAllAppWindows interface mocked in the Previewer. How this interface works on the Previewer" +
+          " may be different from that on a real device.")
+      const len = args.length
+      if (typeof args[len - 1] === 'function') {
+        args[len - 1].call(this, paramMock.businessErrorMock)
+      } else {
+        return new Promise((resolve, reject) => {
+          resolve()
+        })
+      }
+    },
     AvoidAreaType: {
       TYPE_SYSTEM: 0,
       TYPE_CUTOUT: 1,