diff --git a/frameworks/bridge/declarative_frontend/state_mgmt/src/lib/interop/interop_storage_map.ts b/frameworks/bridge/declarative_frontend/state_mgmt/src/lib/interop/interop_storage_map.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f08b0abbb0cc994b1dcb6f37f8e0984895b772bf
--- /dev/null
+++ b/frameworks/bridge/declarative_frontend/state_mgmt/src/lib/interop/interop_storage_map.ts
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * To enable interoperability between LocalStorage and AppStorage, a shared Map object is offered for bidirectional data access.
+ */
+class InteropStorageMap extends Map<string, ObservedPropertyAbstract<any>> {
+    _interopClear?: () => void;
+    _interopDelete?: (key: string) => boolean
+    _interopGet?: (key: string) => ObservedPropertyAbstract<any> | undefined
+    _interopSet?: (key: string, value: ObservedPropertyAbstract<any>) => void
+    _interopHas?: (key: string) => boolean
+    _interopSize?: () => number
+
+    constructor() {
+        super()
+    }
+
+    clear(): void {
+        this._interopClear?.()
+    }
+
+    delete(key: string): boolean {
+        return this._interopDelete ? this._interopDelete(key) : false
+    }
+
+    forEach(callbackfn: (value: ObservedPropertyAbstract<any>, key: string, map: Map<string, ObservedPropertyAbstract<any>>) => void, thisArg?: any): void {
+        throw new Error('interop not impl forEach callback')
+    }
+
+    get(key: string): ObservedPropertyAbstract<any> | undefined {
+        return this._interopGet?.(key)
+    }
+
+    has(key: string): boolean {
+        return this._interopHas ? this._interopHas(key) : false
+    }
+
+    set(key: string, value: ObservedPropertyAbstract<any>): this {
+        this._interopSet?.(key, value)
+        return this;
+    }
+
+    get size(): number {
+        return this._interopSize ? this._interopSize() : 0
+    }
+}
+
+function InitialInteropStorageMap() {
+    
+}
\ No newline at end of file