diff --git a/cocos/renderer/backend/metal/CommandBufferMTL.h b/cocos/renderer/backend/metal/CommandBufferMTL.h
index 7f9e589de6..7e3874a721 100644
--- a/cocos/renderer/backend/metal/CommandBufferMTL.h
+++ b/cocos/renderer/backend/metal/CommandBufferMTL.h
@@ -195,6 +195,7 @@ private:
     
     dispatch_semaphore_t _frameBoundarySemaphore;
     RenderPassDescriptor _prevRenderPassDescriptor;
+    NSAutoreleasePool* _autoReleasePool = nil;
 };
 
 // end of _metal group
diff --git a/cocos/renderer/backend/metal/CommandBufferMTL.mm b/cocos/renderer/backend/metal/CommandBufferMTL.mm
index 2df6d1b3fe..6081d7b969 100644
--- a/cocos/renderer/backend/metal/CommandBufferMTL.mm
+++ b/cocos/renderer/backend/metal/CommandBufferMTL.mm
@@ -220,6 +220,7 @@ CommandBufferMTL::~CommandBufferMTL()
 
 void CommandBufferMTL::beginFrame()
 {
+    _autoReleasePool = [[NSAutoreleasePool alloc] init];
     dispatch_semaphore_wait(_frameBoundarySemaphore, DISPATCH_TIME_FOREVER);
 
     _mtlCommandBuffer = [_mtlCommandQueue commandBuffer];
@@ -366,6 +367,7 @@ void CommandBufferMTL::endFrame()
     [_mtlCommandBuffer commit];
     [_mtlCommandBuffer release];
     DeviceMTL::resetCurrentDrawable();
+    [_autoReleasePool drain];
 }
 
 void CommandBufferMTL::afterDraw()