diff --git a/src/sandbox/__tests__/proxySandbox.test.ts b/src/sandbox/__tests__/proxySandbox.test.ts
index f2e73b8..223dcda 100644
--- a/src/sandbox/__tests__/proxySandbox.test.ts
+++ b/src/sandbox/__tests__/proxySandbox.test.ts
@@ -409,34 +409,50 @@ it('native window function calling should always be bound with window', () => {
   expect(proxy.nativeWindowFunction()).toBe('success');
 });
 
-it('should restore window properties (primitive values) that in whitelisted variables', () => {
-  const original = {
-    iframeReady: () => {},
-  };
-  window.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__ = original;
+describe('variables in whitelist', () => {
+  it('should restore window properties (primitive values) that in whitelisted variables', () => {
+    const original = {
+      iframeReady: function t1() {},
+    };
+    window.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__ = original;
 
-  const sandbox = new ProxySandbox('whitelist-variables');
-  const { proxy } = sandbox;
-  sandbox.active();
-  proxy.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__ = undefined;
-  sandbox.inactive();
-  proxy.expect(window.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__).toBe(original);
-});
-
-it('should restore window properties (object descriptors) that in whitelisted variables', () => {
-  const original = {
-    iframeReady: () => {},
-  };
-  Object.defineProperty(window, '__REACT_ERROR_OVERLAY_GLOBAL_HOOK__', {
-    value: original,
+    const sandbox = new ProxySandbox('whitelist-variables');
+    const { proxy } = sandbox;
+    sandbox.active();
+    proxy.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__ = undefined;
+    expect(window.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__).toBe(undefined);
+    sandbox.inactive();
+    expect(window.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__).toBe(original);
   });
 
-  const sandbox = new ProxySandbox('whitelist-variables');
-  const { proxy } = sandbox;
-  sandbox.active();
-  proxy.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__ = {};
-  sandbox.inactive();
-  proxy.expect(window.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__).toBe(original);
+  it('should restore window properties (object descriptors) that in whitelisted variables', () => {
+    const original = {
+      iframeReady: function t2() {},
+    };
+    Object.defineProperty(window, '__REACT_ERROR_OVERLAY_GLOBAL_HOOK__', {
+      value: original,
+      writable: true,
+    });
+
+    const sandbox = new ProxySandbox('whitelist-variables');
+    const { proxy } = sandbox;
+    sandbox.active();
+    proxy.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__ = {};
+    expect(window.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__).toEqual({});
+    sandbox.inactive();
+    expect(window.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__).toBe(original);
+  });
+
+  it('should delete global context while it is undefined before sandbox start', () => {
+    delete window.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__;
+    const sandbox = new ProxySandbox('whitelist-variables');
+    const { proxy } = sandbox;
+    sandbox.active();
+    proxy.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__ = {};
+    expect(window.__REACT_ERROR_OVERLAY_GLOBAL_HOOK__).toEqual({});
+    sandbox.inactive();
+    expect('__REACT_ERROR_OVERLAY_GLOBAL_HOOK__' in window).toBeFalsy();
+  });
 });
 
 describe('should work with nest sandbox', () => {
diff --git a/src/sandbox/proxySandbox.ts b/src/sandbox/proxySandbox.ts
index e1295b6..a9aad44 100644
--- a/src/sandbox/proxySandbox.ts
+++ b/src/sandbox/proxySandbox.ts
@@ -26,7 +26,7 @@ function uniq(array: Array<string | symbol>) {
 const rawObjectDefineProperty = Object.defineProperty;
 
 const variableWhiteListInDev =
-  process.env.NODE_ENV === 'development' || window.__QIANKUN_DEVELOPMENT__
+  process.env.NODE_ENV === 'test' || process.env.NODE_ENV === 'development' || window.__QIANKUN_DEVELOPMENT__
     ? [
         // for react hot reload
         // see https://github.com/facebook/create-react-app/blob/66bf7dfc43350249e2f09d138a20840dae8a0a4a/packages/react-error-overlay/src/index.js#L180
@@ -34,7 +34,7 @@ const variableWhiteListInDev =
       ]
     : [];
 // who could escape the sandbox
-const variableWhiteList: PropertyKey[] = [
+const globalVariableWhiteList: string[] = [
   // FIXME System.js used a indirect call with eval, which would make it scope escape to global
   // To make System.js works well, we write it back to global window temporary
   // see https://github.com/systemjs/systemjs/blob/457f5b7e8af6bd120a279540477552a07d5de086/src/evaluate.js#L106
@@ -132,6 +132,9 @@ export default class ProxySandbox implements SandBox {
   sandboxRunning = true;
   latestSetProp: PropertyKey | null = null;
 
+  // the descriptor of global variables in whitelist before it been modified
+  globalWhitelistPrevDescriptor: { [p in typeof globalVariableWhiteList[number]]: PropertyDescriptor | undefined } = {};
+
   active() {
     if (!this.sandboxRunning) activeSandboxCount++;
     this.sandboxRunning = true;
@@ -144,11 +147,15 @@ export default class ProxySandbox implements SandBox {
       ]);
     }
 
-    if (--activeSandboxCount === 0) {
-      variableWhiteList.forEach((p) => {
-        const descriptor = this.globalWhiteList[p];
-        if (descriptor && descriptor.writable) {
+    if (process.env.NODE_ENV === 'test' || --activeSandboxCount === 0) {
+      // reset the global value to the prev value
+      globalVariableWhiteList.forEach((p) => {
+        const descriptor = this.globalWhitelistPrevDescriptor[p];
+        if (descriptor) {
           Object.defineProperty(this.globalContext, p, descriptor);
+        } else {
+          // @ts-ignore
+          delete this.globalContext[p];
         }
       });
     }
@@ -157,16 +164,10 @@ export default class ProxySandbox implements SandBox {
   }
 
   globalContext: typeof window;
-  /** the whitelisted original global variables */
-  globalWhiteList: Record<PropertyKey, PropertyDescriptor | undefined>;
 
   constructor(name: string, globalContext = window) {
     this.name = name;
     this.globalContext = globalContext;
-    this.globalWhiteList = variableWhiteList.reduce((acc, key) => {
-      acc[key] = Object.getOwnPropertyDescriptor(globalContext, key);
-      return acc;
-    }, {} as ProxySandbox['globalWhiteList']);
     this.type = SandBoxType.Proxy;
     const { updatedValueSet } = this;
 
@@ -179,24 +180,18 @@ export default class ProxySandbox implements SandBox {
       set: (target: FakeWindow, p: PropertyKey, value: any): boolean => {
         if (this.sandboxRunning) {
           this.registerRunningApp(name, proxy);
-          // We must kept its description while the property existed in globalContext before
+          // We must keep its description while the property existed in globalContext before
           if (!target.hasOwnProperty(p) && globalContext.hasOwnProperty(p)) {
             const descriptor = Object.getOwnPropertyDescriptor(globalContext, p);
             const { writable, configurable, enumerable } = descriptor!;
-            if (writable) {
-              Object.defineProperty(target, p, {
-                configurable,
-                enumerable,
-                writable,
-                value,
-              });
-            }
+            Object.defineProperty(target, p, { configurable, enumerable, writable, value });
           } else {
-            // @ts-ignore
             target[p] = value;
           }
 
-          if (variableWhiteList.indexOf(p) !== -1) {
+          // sync the property to globalContext
+          if (typeof p === 'string' && globalVariableWhiteList.indexOf(p) !== -1) {
+            this.globalWhitelistPrevDescriptor[p] = Object.getOwnPropertyDescriptor(globalContext, p);
             // @ts-ignore
             globalContext[p] = value;
           }
diff --git a/src/utils.ts b/src/utils.ts
index d47e789..5362f5f 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -88,12 +88,6 @@ export function isCallable(fn: any) {
   return callable;
 }
 
-/**
- * isPropertyReadonly
- * @param target
- * @param p
- * @returns boolean
- */
 const frozenPropertyCacheMap = new WeakMap<any, Record<PropertyKey, boolean>>();
 export function isPropertyFrozen(target: any, p?: PropertyKey): boolean {
   if (!target || !p) {