diff --git a/Pod/Classes/DRDAPIManager.m b/Pod/Classes/DRDAPIManager.m
index dc5ba4a..5c6cfa0 100644
--- a/Pod/Classes/DRDAPIManager.m
+++ b/Pod/Classes/DRDAPIManager.m
@@ -286,10 +286,6 @@ - (void)callAPICompletion:(DRDBaseAPI *)api
 #pragma mark - Send Batch Requests
 - (void)sendBatchAPIRequests:(nonnull DRDAPIBatchAPIRequests *)apis {
     NSParameterAssert(apis);
-    
-    NSAssert([[apis.apiRequestsSet valueForKeyPath:@"hash"] count] == [apis.apiRequestsSet count],
-             @"Should not have same API");
-    
     dispatch_group_t batch_api_group = dispatch_group_create();
     __weak typeof(self) weakSelf = self;
     [apis.apiRequestsSet enumerateObjectsUsingBlock:^(id api, BOOL * stop) {
@@ -341,9 +337,9 @@ - (void)_sendSingleAPIRequest:(DRDBaseAPI *)api
     __weak typeof(self) weakSelf = self;
     NSString *requestUrlStr = [self requestUrlStringWithAPI:api];
     id requestParams        = [self requestParamsWithAPI:api];
-    NSString *hashKey       = [NSString stringWithFormat:@"%lu", (unsigned long)[api hash]];
+    NSString *apiRequestKey = [api apiRequestKey];
     
-    if ([self.sessionTasksCache objectForKey:hashKey]) {
+    if ([self.sessionTasksCache objectForKey:apiRequestKey]) {
         NSString *errorStr     = self.configuration.frequentRequestErrorStr;
         NSDictionary *userInfo = @{
                                    NSLocalizedDescriptionKey : errorStr
@@ -391,7 +387,7 @@ - (void)_sendSingleAPIRequest:(DRDBaseAPI *)api
             [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
         }
         [strongSelf handleSuccWithResponse:responseObject andAPI:api];
-        [strongSelf.sessionTasksCache removeObjectForKey:hashKey];
+        [strongSelf.sessionTasksCache removeObjectForKey:apiRequestKey];
         if (completionGroup) {
             dispatch_group_leave(completionGroup);
         }
@@ -404,7 +400,7 @@ - (void)_sendSingleAPIRequest:(DRDBaseAPI *)api
             [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
         }
         [strongSelf handleFailureWithError:error andAPI:api];
-        [strongSelf.sessionTasksCache removeObjectForKey:hashKey];
+        [strongSelf.sessionTasksCache removeObjectForKey:apiRequestKey];
         if (completionGroup) {
             dispatch_group_leave(completionGroup);
         }
@@ -507,7 +503,7 @@ - (void)_sendSingleAPIRequest:(DRDBaseAPI *)api
             break;
     }
     if (dataTask) {
-        [self.sessionTasksCache setObject:dataTask forKey:hashKey];
+        [self.sessionTasksCache setObject:dataTask forKey:apiRequestKey];
     }
     
     if ([[NSThread currentThread] isMainThread]) {
@@ -521,9 +517,9 @@ - (void)_sendSingleAPIRequest:(DRDBaseAPI *)api
 
 - (void)cancelAPIRequest:(nonnull DRDBaseAPI *)api {
     dispatch_async(drd_api_task_creation_queue(), ^{
-        NSString *hashKey = [NSString stringWithFormat:@"%lu", (unsigned long)[api hash]];
-        NSURLSessionDataTask *dataTask = [self.sessionTasksCache objectForKey:hashKey];
-        [self.sessionTasksCache removeObjectForKey:hashKey];
+        NSString *apiRequestKey = [api apiRequestKey];
+        NSURLSessionDataTask *dataTask = [self.sessionTasksCache objectForKey:apiRequestKey];
+        [self.sessionTasksCache removeObjectForKey:apiRequestKey];
         if (dataTask) {
             [dataTask cancel];
         }
diff --git a/Pod/Classes/DRDBaseAPI.h b/Pod/Classes/DRDBaseAPI.h
index 26c096f..a228d24 100644
--- a/Pod/Classes/DRDBaseAPI.h
+++ b/Pod/Classes/DRDBaseAPI.h
@@ -235,6 +235,11 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (nonnull DRDSecurityPolicy *)apiSecurityPolicy;
 
+/**
+ *  API存储在DataTaskCache中的Key
+ */
+- (nonnull NSString *)apiRequestKey;
+
 #pragma mark - Process
 
 /**
@@ -259,4 +264,4 @@ NS_ASSUME_NONNULL_BEGIN
 
 @end
 
-NS_ASSUME_NONNULL_END
\ No newline at end of file
+NS_ASSUME_NONNULL_END
diff --git a/Pod/Classes/DRDBaseAPI.m b/Pod/Classes/DRDBaseAPI.m
index 679b64d..95d3e43 100644
--- a/Pod/Classes/DRDBaseAPI.m
+++ b/Pod/Classes/DRDBaseAPI.m
@@ -110,14 +110,16 @@ - (void)cancel {
     [[DRDAPIManager sharedDRDAPIManager] cancelAPIRequest:((DRDBaseAPI *)self)];
 }
 
-- (NSUInteger)hash {
-    NSMutableString *hashStr = [NSMutableString stringWithFormat:@"%@ %@ %@ %@",
-                                [self requestMethod], [self requestParameters], [self baseUrl], [self customRequestUrl]];
-    return [hashStr hash];
+- (NSString *)apiRequestKey {
+    return [NSString stringWithFormat:@"%@_%@_%@_%@",
+            [self requestMethod] ? : @"",
+            self.requestParameters ? : @"",
+            [self baseUrl] ? : @"",
+            [self customRequestUrl] ? : @""];
 }
 
 -(BOOL)isEqualToAPI:(DRDBaseAPI *)api {
-    return [self hash] == [api hash];
+    return [[self apiRequestKey] isEqualToString:[api apiRequestKey]];
 }
 
 - (BOOL)isEqual:(id)object {