diff --git a/sonic-iOS/Sonic/SonicCache.m b/sonic-iOS/Sonic/SonicCache.m
index fc17eda..73ac6f2 100644
--- a/sonic-iOS/Sonic/SonicCache.m
+++ b/sonic-iOS/Sonic/SonicCache.m
@@ -143,7 +143,18 @@ - (void)setupDatabase
 
 - (void)memoryWarningClearCache
 {
-    [self clearAllCache];
+    [self clearMemoryCache];
+}
+
+- (void)clearMemoryCache
+{
+    //we need clear or create memory cache in sonic queue
+    dispatchToSonicSessionQueue(^{
+        [self.lock lock];
+        [self.memoryCache removeAllObjects];
+        [self.recentlyUsedKey removeAllObjects];
+        [self.lock unlock];
+    });
 }
 
 - (void)clearAllCache
@@ -158,13 +169,7 @@ - (void)clearAllCache
         [self setupDatabase];
     });
     
-    //we need clear or create memory cache in sonic queue
-    dispatchToSonicSessionQueue(^{
-        [self.lock lock];
-        [self.memoryCache removeAllObjects];
-        [self.recentlyUsedKey removeAllObjects];
-        [self.lock unlock];
-    });
+    [self clearMemoryCache];
 }
 
 - (void)removeCacheBySessionID:(NSString *)sessionID
diff --git a/sonic-iOS/Sonic/SonicURLProtocol.m b/sonic-iOS/Sonic/SonicURLProtocol.m
index 5bae568..4e6b1a7 100644
--- a/sonic-iOS/Sonic/SonicURLProtocol.m
+++ b/sonic-iOS/Sonic/SonicURLProtocol.m
@@ -34,8 +34,9 @@ + (BOOL)canInitWithRequest:(NSURLRequest *)request
     if (value.length != 0 && [value isEqualToString:SonicHeaderValueWebviewLoad]) {
         NSString * delegateId = [request.allHTTPHeaderFields objectForKey:SonicHeaderKeyDelegateId];
         if (delegateId.length != 0) {
+            NSString * sessionID = sonicSessionID(request.URL.absoluteString);
             SonicSession *session = [[SonicEngine sharedEngine] sessionWithDelegateId:delegateId];
-            if (session) {
+            if (session && [sessionID isEqualToString:session.sessionID]) {
                 return YES;
             }
             NSLog(@"SonicURLProtocol.canInitWithRequest error:Cannot find sonic session!");