diff --git a/doric-android/doric/src/main/java/pub/doric/DoricContext.java b/doric-android/doric/src/main/java/pub/doric/DoricContext.java
index 7e81d911..4e5b0057 100644
--- a/doric-android/doric/src/main/java/pub/doric/DoricContext.java
+++ b/doric-android/doric/src/main/java/pub/doric/DoricContext.java
@@ -212,6 +212,7 @@ public class DoricContext {
         this.script = script;
         this.mRootNode.setId("");
         this.mRootNode.clearSubModel();
+        this.mRootNode.getView().removeAllViews();
         getDriver().createContext(mContextId, script, source);
         init(this.extra);
         callEntity(DoricConstant.DORIC_ENTITY_CREATE);
diff --git a/doric-iOS/Devkit/Classes/DoricDev.m b/doric-iOS/Devkit/Classes/DoricDev.m
index 180ae35c..03fca90a 100644
--- a/doric-iOS/Devkit/Classes/DoricDev.m
+++ b/doric-iOS/Devkit/Classes/DoricDev.m
@@ -205,9 +205,9 @@ - (void)startDebugging:(NSString *)source {
         [self.wsClient sendToDebugger:@"DEBUG_RES" payload:@{
                 @"contextId": context.contextId
         }];
-        self.debuggable = [[DoricContextDebuggable alloc] initWithWSClient:self.wsClient context:context];
-        [self.debuggable startDebug];
         dispatch_async(dispatch_get_main_queue(), ^{
+            self.debuggable = [[DoricContextDebuggable alloc] initWithWSClient:self.wsClient context:context];
+            [self.debuggable startDebug];
             for (id <DoricDevStatusCallback> callback in self.callbacks) {
                 [callback onStartDebugging:context];
             }
@@ -224,9 +224,9 @@ - (void)stopDebugging:(BOOL)resume {
     [self.wsClient sendToDebugger:@"DEBUG_STOP" payload:@{
             @"msg": @"Stop debugging"
     }];
-    [self.debuggable stopDebug:resume];
-    self.debuggable = nil;
     dispatch_async(dispatch_get_main_queue(), ^{
+        [self.debuggable stopDebug:resume];
+        self.debuggable = nil;
         for (id <DoricDevStatusCallback> callback in self.callbacks) {
             [callback onStopDebugging];
         }
diff --git a/doric-iOS/Devkit/Classes/DoricRemoteJSExecutor.m b/doric-iOS/Devkit/Classes/DoricRemoteJSExecutor.m
index f59db09a..cfe78e02 100644
--- a/doric-iOS/Devkit/Classes/DoricRemoteJSExecutor.m
+++ b/doric-iOS/Devkit/Classes/DoricRemoteJSExecutor.m
@@ -52,6 +52,7 @@ @interface DoricRemoteJSExecutor () <DoricWSClientInterceptor>
 @property(nonatomic) NSInteger counter;
 @property(nonatomic, strong) NSMutableDictionary <NSNumber *, dispatch_semaphore_t> *semaphores;
 @property(nonatomic, strong) NSMutableDictionary <NSNumber *, JSValue *> *results;
+@property(nonatomic, strong) JSContext *jsContext;
 @end
 
 @implementation DoricRemoteJSExecutor
@@ -63,6 +64,7 @@ - (instancetype)initWithWSClient:(DoricWSClient *)wsClient {
         _semaphores = [NSMutableDictionary new];
         _results = [NSMutableDictionary new];
         _counter = 0;
+        _jsContext = [[JSContext alloc] init];
     }
     return self;
 }
@@ -128,7 +130,7 @@ - (JSValue *)invokeObject:(NSString *)objName method:(NSString *)funcName args:(
     dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
     self.semaphores[@(callId)] = semaphore;
     self.invokingMethod = YES;
-    DoricLog(@"Lock %@",@(callId));
+    DoricLog(@"Lock %@", @(callId));
     DC_LOCK(semaphore);
     JSValue *result = self.results[@(callId)];
     [self.results removeObjectForKey:@(callId)];
@@ -169,7 +171,9 @@ - (BOOL)interceptType:(NSString *)type command:(NSString *)cmd payload:(NSDictio
             NSString *name = payload[@"name"];
             NSArray *argsArr = payload[@"arguments"];
             id tmpBlk = self.blockMDic[name];
-            if (argsArr.count == 0) {
+            if (!tmpBlk) {
+                DoricLog(@"Cannot find inject function:%@", name);
+            } else if (argsArr.count == 0) {
                 ((Block0) tmpBlk)();
             } else if (argsArr.count == 1) {
                 ((Block1) tmpBlk)(argsArr[0]);
@@ -187,12 +191,12 @@ - (BOOL)interceptType:(NSString *)type command:(NSString *)cmd payload:(NSDictio
         } else if ([cmd isEqualToString:@"invokeMethod"]) {
             NSNumber *callId = payload[@"callId"];
             @try {
-                JSValue *value = [JSValue valueWithObject:payload[@"result"] inContext:nil];
+                JSValue *value = [JSValue valueWithObject:payload[@"result"] inContext:self.jsContext];
                 self.results[callId] = value;
             } @catch (NSException *exception) {
                 DoricLog(@"debugger ", NSStringFromSelector(_cmd), exception.reason);
             } @finally {
-                DoricLog(@"Unlock:%@",payload);
+                DoricLog(@"Unlock:%@", payload);
                 dispatch_semaphore_t semaphore = self.semaphores[callId];
                 [self.semaphores removeObjectForKey:callId];
                 DC_UNLOCK(semaphore);
diff --git a/doric-iOS/Devkit/Classes/DoricWSClient.m b/doric-iOS/Devkit/Classes/DoricWSClient.m
index 243dd84b..22064e74 100644
--- a/doric-iOS/Devkit/Classes/DoricWSClient.m
+++ b/doric-iOS/Devkit/Classes/DoricWSClient.m
@@ -38,6 +38,7 @@ - (instancetype)initWithUrl:(NSString *)url {
         _interceptors = [NSHashTable hashTableWithOptions:NSPointerFunctionsWeakMemory];
         _websocket = [[SRWebSocket alloc] initWithURL:[NSURL URLWithString:url]];
         _websocket.delegate = self;
+        _websocket.delegateDispatchQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);
         [_websocket open];
     }
     return self;
diff --git a/doric-iOS/Pod/Classes/DoricContext.m b/doric-iOS/Pod/Classes/DoricContext.m
index e8055b75..1495ab04 100644
--- a/doric-iOS/Pod/Classes/DoricContext.m
+++ b/doric-iOS/Pod/Classes/DoricContext.m
@@ -102,6 +102,9 @@ - (void)reload:(NSString *)script {
     [self.driver destroyContext:self.contextId];
     self.rootNode.viewId = nil;
     [self.rootNode clearSubModel];
+    [self.rootNode.view.subviews forEach:^(__kindof UIView *obj) {
+        [obj removeFromSuperview];
+    }];
     self.script = script;
     [self.driver createContext:self.contextId script:script source:self.source];
     [self init:self.extra];
diff --git a/doric-iOS/Pod/Classes/Engine/DoricJSEngine.m b/doric-iOS/Pod/Classes/Engine/DoricJSEngine.m
index b2fa01a8..04a1ceb1 100644
--- a/doric-iOS/Pod/Classes/Engine/DoricJSEngine.m
+++ b/doric-iOS/Pod/Classes/Engine/DoricJSEngine.m
@@ -103,6 +103,9 @@ - (instancetype)init {
 
 - (void)teardown {
     _destroyed = YES;
+    //To ensure runloop continue.
+    [self ensureRunOnJSThread:^{
+    }];
 }
 
 - (void)ensureRunOnJSThread:(dispatch_block_t)block {