diff --git a/package-lock.json b/package-lock.json
index 33e13186fc39081cf8a70dee6d7d1ce2c6e1b0c0..2ca87c15f78f00350aa4d992db9e9c056bd1afa6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,15 +1,16 @@
 {
   "name": "@lidh04/circle-chain-sdk",
-  "version": "1.0.0",
+  "version": "1.0.7",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@lidh04/circle-chain-sdk",
-      "version": "1.0.0",
+      "version": "1.0.7",
       "license": "ISC",
       "dependencies": {
         "axios": "^1.7.4",
+        "js-cookie": "^3.0.5",
         "tsd-jsdoc": "^2.5.0"
       },
       "devDependencies": {}
@@ -197,6 +198,14 @@
       "integrity": "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==",
       "peer": true
     },
+    "node_modules/js-cookie": {
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/js-cookie/-/js-cookie-3.0.5.tgz",
+      "integrity": "sha512-cEiJEAEoIbWfCZYKWhVwFuvPX1gETRYPw6LlaTKoxD3s2AkXzkCjnp6h0V77ozyqj0jakteJ4YqDJT830+lVGw==",
+      "engines": {
+        "node": ">=14"
+      }
+    },
     "node_modules/js2xmlparser": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/js2xmlparser/-/js2xmlparser-4.0.2.tgz",
diff --git a/package.json b/package.json
index dae2f35dc61f40a19523bda4b92934680253d5ef..6342d2ea745b998549f7bfc794c152741e7a259c 100644
--- a/package.json
+++ b/package.json
@@ -15,9 +15,9 @@
   "license": "ISC",
   "dependencies": {
     "axios": "^1.7.4",
+    "js-cookie": "^3.0.5",
     "tsd-jsdoc": "^2.5.0"
   },
-  "devDependencies": {},
   "repository": {
     "type": "git",
     "url": "git@gitee.com:lidh04/js-circle-chain-sdk.git"
diff --git a/src/circle-common.js b/src/circle-common.js
index 0627450df1eecb13192a08e9c1786619bba5424e..18826bd0e0d8ed53bac0d24f81c8bc214a24b922 100644
--- a/src/circle-common.js
+++ b/src/circle-common.js
@@ -1,7 +1,12 @@
-import gateway from "./circle-gateway.js";
 import axios from 'axios';
-
 import { readFile } from 'node:fs/promises';
+import Cookies from 'js-cookie';
+import gateway from "./circle-gateway.js";
+
+/**
+ * @type string
+ */
+export const COOKIE_KEY = "userLoginInfo";
 
 /**
  * build url tool
@@ -68,8 +73,13 @@ export async function postData(url, input, timeout=30000) {
  * get session key from the path.
  */
 export async function getSessionKey() {
-  if (process.browser) {
-    // TODO return the data in cookie
+  if (isBrowser()) {
+    const value = Cookies.get(COOKIE_KEY);
+    if (value) {
+      const userLoginInfo = JSON.parse(value);
+      const { sessionKey } = userLoginInfo;
+      return sessionKey;
+    }
     return null;
   }
 
@@ -126,3 +136,24 @@ export async function getData(url, timeout=30000) {
     };
   }
 }
+
+export function isBrowser() {
+  // Check if the environment is a
+  // Service worker
+  if (typeof importScripts === "function") {
+    return false;
+  }
+
+  // Check if the environment is a Browser
+  if (typeof window === "object") {
+    return true;
+  }
+
+  // Check if the environment is Node.js
+  if (typeof process === "object"
+      && typeof require === "function") {
+    return false;
+  }
+
+  return false;
+}
diff --git a/src/circle-user.js b/src/circle-user.js
index 9971f9c74a9f94367c281fffbf7e9b6620d736e3..5bfd469e52757ae8088e0dc4815c630d9b35a9ce 100644
--- a/src/circle-user.js
+++ b/src/circle-user.js
@@ -5,11 +5,11 @@
  * @license copyright to shc
  */
 
-import gateway from "./circle-gateway.js";
+import Cookies from 'js-cookie';
 import { writeFile, mkdir } from 'node:fs/promises';
 import path from 'path';
-import { buildUrl, getData, postData } from "./circle-common.js";
-
+import { buildUrl, getData, postData, COOKIE_KEY, isBrowser } from "./circle-common.js";
+import gateway from "./circle-gateway.js";
 
 /// <reference path="./circle-types.js" />
 
@@ -136,8 +136,10 @@ export async function login(input) {
  * @returns {Promise<void>} - no returns.
  */
 export async function saveUserLoginInfo(userLoginInfo) {
-  if (process.browser) {
-    // TODO store the login info in cookie
+  if (isBrowser()) {
+    Cookies.set(COOKIE_KEY, JSON.stringify(userLoginInfo), {
+      expires: 7, path: '/'
+    });
     return;
   }
 
@@ -158,8 +160,7 @@ ${accountInfo}
     await mkdir(dir, { recursive: true });
     await writeFile(sessionFullPath, content);
   } catch (err) {
-    console.error("cannot save user login info:", JSON.stringify(userLoginInfo),
-                  "to session path:", sessionFullPath);
+    console.error("cannot save user login info:", JSON.stringify(userLoginInfo), "to session path:", sessionFullPath);
   }
 }
 
diff --git a/tools/logged-user.js b/tools/logged-user.js
index dd5d9e9c67c09b897542065365e65028809c66be..63da7f4684b7f6b3eb1da95bcd899ee59d6d1f53 100644
--- a/tools/logged-user.js
+++ b/tools/logged-user.js
@@ -9,6 +9,7 @@ async function main() {
   console.log("userInfo:", userInfo);
   const balanceOfWallet = await circle.wallet.getBalanceOfWallet();
   console.log("balanceOfWallet:", balanceOfWallet);
+  console.log("require:", typeof(importScripts));
 }
 
 async function loginUser() {