diff --git a/app/.vitepress/theme/components/createState.vue b/app/.vitepress/theme/components/createState.vue
index 725f85f..3191e3c 100644
--- a/app/.vitepress/theme/components/createState.vue
+++ b/app/.vitepress/theme/components/createState.vue
@@ -5,7 +5,7 @@ import * as React from "react";
 import * as ReactDOM from "react-dom/client";
 const divRef = ref<HTMLElement | null>(null);
 
-const useCountState = createState(withNamespace(() => ({ data: { count: 1 } }), { namespace: "count" }));
+const useCountState = createState(withNamespace(() => ({ data: { count: 1 } }), { namespace: "count", reduxDevTool: true }));
 
 const App = () => {
   const count = useCountState((state) => state.data);
diff --git a/app/.vitepress/theme/components/createStateWithActionsMiddleware.vue b/app/.vitepress/theme/components/createStateWithActionsMiddleware.vue
index f49efce..88e444a 100644
--- a/app/.vitepress/theme/components/createStateWithActionsMiddleware.vue
+++ b/app/.vitepress/theme/components/createStateWithActionsMiddleware.vue
@@ -11,7 +11,7 @@ const useCountState_v2 = createState(withActions(() => ({ count: 1 }), { generat
 
 const useCountState_v3 = createState(withActions(() => ({ count: 1 }), { generateActions: (state) => { return { add: (v) => { console.log(v); state.count++ }, del: () => state.count-- } } }));
 
-const useCountState_v4 = createState(() => ({ count: 1 }), { withActions: (state) => { return { add: (v) => { console.log(v); state.count++ }, del: () => state.count-- } }, withNamespace: 'count_4' });
+const useCountState_v4 = createState(withNamespace(() => ({ count: 1 }), { namespace: 'foo_2', reduxDevTool: true }), { withActions: (state) => { return { add: (v) => { console.log(v); state.count++ }, del: () => state.count-- } }, withNamespace: 'count_4' });
 
 const App = () => {
   const { count, add } = useCountState_v4();
diff --git a/app/.vitepress/theme/components/createStateWithAllMiddleware.vue b/app/.vitepress/theme/components/createStateWithAllMiddleware.vue
index cf39c04..c9c9af0 100644
--- a/app/.vitepress/theme/components/createStateWithAllMiddleware.vue
+++ b/app/.vitepress/theme/components/createStateWithAllMiddleware.vue
@@ -1,13 +1,13 @@
 <script lang="ts" setup>
 import { ref, onMounted, onBeforeUnmount } from "vue";
-import { createState, withActions, withPersist } from "reactivity-store";
+import { createState, withActions, withNamespace, withPersist } from "reactivity-store";
 import * as React from "react";
 import * as ReactDOM from "react-dom/client";
 const divRef = ref<HTMLElement | null>(null);
 
 // const useCountState = createState(withPersist(withActions(() => ({ data: { count: 1 } }), { generateActions: (state) => ({ add: () => state.data.count++, del: () => state.data.count-- }) }), { key: 'foo' }));
 
-const useCountState = createState(withActions(withPersist(() => ({ data: { count: 1 } }), { key: 'foo' }), { generateActions: (state) => ({ add: () => state.data.count++, del: () => state.data.count-- }) }));
+const useCountState = createState(withNamespace(withActions(() => ({ data: { count: 1 } }), { generateActions: (state) => ({ add: () => state.data.count++, del: () => state.data.count-- }) }), { namespace: 'foo1', reduxDevTool: true }));
 
 const App = () => {
   const { count, add } = useCountState((state) => {
diff --git a/packages/r-store/index.d.ts b/packages/r-store/index.d.ts
index f0de4a6..d4e880f 100644
--- a/packages/r-store/index.d.ts
+++ b/packages/r-store/index.d.ts
@@ -188,7 +188,10 @@ export declare type StateWithMiddleware<T, P> = {
     ["$$__state__$$"]: T;
     ["$$__middleware__$$"]: Record<string, unknown>;
     ["$$__actions__$$"]: P;
-    ["$$__namespace__$$"]: string;
+    ["$$__namespace__$$"]: {
+        namespace?: string;
+        reduxDevTool?: boolean;
+    };
 };
 
 /**
@@ -256,7 +259,7 @@ export declare type UseSelectorWithStore<T> = {
 /**
  * @public
  */
-export declare const version = "0.2.5";
+export declare const version = "0.2.6";
 
 /**
  * @public
@@ -291,6 +294,7 @@ export declare function withNamespace<T extends Record<string, unknown>>(setup:
  */
 export declare type WithNamespaceProps = {
     namespace: string;
+    reduxDevTool?: boolean;
 };
 
 /**
diff --git a/packages/r-store/package.json b/packages/r-store/package.json
index 89f71e1..98ff1cd 100644
--- a/packages/r-store/package.json
+++ b/packages/r-store/package.json
@@ -1,6 +1,6 @@
 {
   "name": "reactivity-store",
-  "version": "0.2.5",
+  "version": "0.2.6",
   "author": "MrWangJustToDo",
   "license": "MIT",
   "description": "a reactive store, make you write reactive logic in react app just like zustand",
diff --git a/packages/r-store/src/shared/dev.ts b/packages/r-store/src/shared/dev.ts
index 3a918b0..160bef9 100644
--- a/packages/r-store/src/shared/dev.ts
+++ b/packages/r-store/src/shared/dev.ts
@@ -75,23 +75,44 @@ export const delDevController = (controller: Controller, state: any) => {
   }
 };
 
+// cache state which has connect to devtool
+const devToolMap: Record<string, any> = {};
+
 /**
  * @internal
  */
-// export const connectDevTool = (name: string, actions: Record<string, Function>, state: any) => {
-//   if (window.__REDUX_DEVTOOLS_EXTENSION__ && typeof window.__REDUX_DEVTOOLS_EXTENSION__.connect === "function") {
-//     const devTools = window.__REDUX_DEVTOOLS_EXTENSION__.connect({ name });
-//     devTools.init(state);
-//     const action = { type: "name/anonymous" };
-//     return Object.keys(actions).reduce((p, c) => {
-//       p[c] = (...args) => {
-//         const re = actions[c](...args);
-//         devTools.send({ ...action, args },  JSON.parse(JSON.stringify(state)));
-//         return re;
-//       };
-//       return p;
-//     }, {})
-//   } else {
-//     return actions;
-//   }
-// };
+export const connectDevTool = (name: string, actions: Record<string, Function>, state: any) => {
+  if (window && window.__REDUX_DEVTOOLS_EXTENSION__ && typeof window.__REDUX_DEVTOOLS_EXTENSION__.connect === "function") {
+    if (devToolMap[name] && devToolMap[name] !== state) {
+      console.warn(`[reactivity-store/middleware] can not connect the devtool with same 'namespace' but with different state object!`);
+      return actions;
+    }
+    const devTools = window.__REDUX_DEVTOOLS_EXTENSION__.connect({ name });
+    // make the state in the devtool as a immutable object
+    devToolMap[name] = JSON.parse(JSON.stringify(state));
+    const obj = { ...devToolMap };
+    try {
+      Object.freeze(obj);
+    } catch {
+      void 0;
+    }
+    devTools.init(obj);
+    const action = { type: "name/anonymous" };
+    return Object.keys(actions).reduce((p, c) => {
+      p[c] = (...args) => {
+        const re = actions[c](...args);
+        const nextObj = { ...devToolMap, [name]: JSON.parse(JSON.stringify(state)) };
+        try {
+          Object.freeze(nextObj);
+        } catch {
+          void 0;
+        }
+        devTools.send({ ...action, $payload: args }, nextObj);
+        return re;
+      };
+      return p;
+    }, {});
+  } else {
+    return actions;
+  }
+};
diff --git a/packages/r-store/src/state/_internal.ts b/packages/r-store/src/state/_internal.ts
index a20b4db..4707c0d 100644
--- a/packages/r-store/src/state/_internal.ts
+++ b/packages/r-store/src/state/_internal.ts
@@ -1,5 +1,7 @@
 import { reactive, toRaw } from "@vue/reactivity";
 
+import { connectDevTool } from "../shared/dev";
+import { isServer } from "../shared/env";
 import { createHook } from "../shared/hook";
 import { createLifeCycle } from "../shared/lifeCycle";
 import { checkHasFunction, checkHasReactive, checkHasSameField } from "../shared/tools";
@@ -45,7 +47,7 @@ export function internalCreateState<T extends Record<string, unknown>, P extends
   // handle withActions middleware;
   const initialState = getFinalState(state) as T;
 
-  const actions = getFinalActions(state);
+  let actions = getFinalActions(state);
 
   const namespace = getFinalNamespace(state);
 
@@ -70,11 +72,15 @@ export function internalCreateState<T extends Record<string, unknown>, P extends
     sameField.forEach((key) => console.warn(`[reactivity-store] duplicate key: [${key}] in 'state' and 'actions' from createState, this is a unexpected usage`));
   }
 
+  if (__DEV__ && namespace.reduxDevTool && !isServer) {
+    actions = connectDevTool(namespace.namespace, actions, rawState) as P;
+  }
+
   const reactiveState = reactive(initialState);
 
   const deepSelector = option?.withDeepSelector ?? true;
 
-  const useSelector = createHook<T, P & L>(reactiveState, rawState, lifeCycle, deepSelector, namespace, actions as P & L);
+  const useSelector = createHook<T, P & L>(reactiveState, rawState, lifeCycle, deepSelector, namespace.namespace, actions as P & L);
 
   return useSelector;
 }
diff --git a/packages/r-store/src/state/middleware.ts b/packages/r-store/src/state/middleware.ts
index d8dd9a8..18123cc 100644
--- a/packages/r-store/src/state/middleware.ts
+++ b/packages/r-store/src/state/middleware.ts
@@ -233,6 +233,8 @@ export function withNamespace<T extends Record<string, unknown>, P extends Recor
 
       const actions = getFinalActions(_initialState);
 
+      const namespace = getFinalNamespace(_initialState);
+
       if (__DEV__ && (options.namespace === "$$__ignore__$$" || options.namespace === "$$__persist__$$")) {
         console.warn(`[reactivity-store/namespace] current namespace: '${options.namespace}' is a internal namespace, try to use another one`);
       }
@@ -244,16 +246,13 @@ export function withNamespace<T extends Record<string, unknown>, P extends Recor
         }
         setNamespaceMap(options.namespace, initialState);
 
-        // if (!alreadyHasNameSpace && !isServer && options.reduxDevTool && initialState) {
-        //   actions = connectDevTool(options.namespace, actions, initialState) as P;
-        // }
       }
 
       return {
         ["$$__state__$$"]: initialState,
         ["$$__actions__$$"]: actions,
         ["$$__middleware__$$"]: middleware,
-        ["$$__namespace__$$"]: options.namespace,
+        ["$$__namespace__$$"]: { ...namespace, ...options },
       };
     },
     { name: "withNamespace" }
diff --git a/packages/r-store/src/state/tools.ts b/packages/r-store/src/state/tools.ts
index bd6d819..fc4df1c 100644
--- a/packages/r-store/src/state/tools.ts
+++ b/packages/r-store/src/state/tools.ts
@@ -18,7 +18,7 @@ export type StateWithMiddleware<T, P> = {
   ["$$__state__$$"]: T;
   ["$$__middleware__$$"]: Record<string, unknown>;
   ["$$__actions__$$"]: P;
-  ["$$__namespace__$$"]: string;
+  ["$$__namespace__$$"]: { namespace?: string; reduxDevTool?: boolean };
 };
 
 /**
@@ -59,7 +59,7 @@ export type WithActionsProps<T, P> = {
  */
 export type WithNamespaceProps = {
   namespace: string;
-  // reduxDevTool?: boolean;
+  reduxDevTool?: boolean;
 };
 
 /**
@@ -114,7 +114,7 @@ export const getFinalActions = <T extends Record<string, unknown>, P extends Rec
  * @internal
  */
 export const getFinalNamespace = <T extends Record<string, unknown>, P extends Record<string, Function>>(state: MaybeStateWithMiddleware<T, P>) => {
-  if (state["$$__state__$$"]) return (state["$$__namespace__$$"] || "") as string;
+  if (state["$$__state__$$"]) return (state["$$__namespace__$$"] || {}) as { namespace?: string; reduxDevTool?: boolean };
 
-  return "";
+  return {} as { namespace?: string; reduxDevTool?: boolean };
 };
diff --git a/packages/ui/src/hooks/useCount.ts b/packages/ui/src/hooks/useCount.ts
index 335b511..37eaebe 100644
--- a/packages/ui/src/hooks/useCount.ts
+++ b/packages/ui/src/hooks/useCount.ts
@@ -1,7 +1,10 @@
-import { ref, createState, createStore, withActions } from "reactivity-store";
+import { ref, createState, createStore, withActions, withNamespace } from "reactivity-store";
 
 export const useCount = createState(
-  withActions(() => ({ count: 0 }), { generateActions: (state) => ({ add: () => state.count++, del: () => state.count-- }) }),
+  withNamespace(
+    withActions(() => ({ count: 0 }), { generateActions: (state) => ({ add: () => state.count++, del: () => state.count-- }) }),
+    { namespace: "foo", reduxDevTool: true }
+  ),
   { withActions: (s) => ({ add: () => s.count++ }) }
   // { withNamespace: "useCount", withActions: (s: { count: number; }) => ({ add: () => s.count++ })}
 );