diff --git a/tutorials/source_en/quick_start/quick_start.md b/tutorials/source_en/quick_start/quick_start.md
index c14baceec3229dbd99a86e518a8e38b85ae83964..f2663c28cd60cf1de5377ee156960ba1d73e3aaf 100644
--- a/tutorials/source_en/quick_start/quick_start.md
+++ b/tutorials/source_en/quick_start/quick_start.md
@@ -101,6 +101,7 @@ if __name__ == "__main__":
     args = parser.parse_args()
     context.set_context(mode=context.GRAPH_MODE, device_target=args.device_target,
                         enable_mem_reuse=False)
+    context.set_context(enable_loop_sink=(args.device_target == 'Ascend'))
     ...
 ```
 
diff --git a/tutorials/source_zh_cn/quick_start/quick_start.md b/tutorials/source_zh_cn/quick_start/quick_start.md
index 605238850a856f7ddb8b052e48369e87ce0717ef..5ce9c9b646245642a26fd37e18c0306d8e7f54e4 100644
--- a/tutorials/source_zh_cn/quick_start/quick_start.md
+++ b/tutorials/source_zh_cn/quick_start/quick_start.md
@@ -103,6 +103,7 @@ if __name__ == "__main__":
     args = parser.parse_args()
     context.set_context(mode=context.GRAPH_MODE, device_target=args.device_target,
                         enable_mem_reuse=False)
+    context.set_context(enable_loop_sink=(args.device_target == 'Ascend'))
     ...
 ```
 
diff --git a/tutorials/tutorial_code/lenet.py b/tutorials/tutorial_code/lenet.py
index 797c63b9da9609ae5616c519e64af73692b8fdd6..db2e99fbbacb1d9adc911b62cb6acea3bf15fb81 100644
--- a/tutorials/tutorial_code/lenet.py
+++ b/tutorials/tutorial_code/lenet.py
@@ -197,6 +197,7 @@ if __name__ == "__main__":
     args = parser.parse_args()
     context.set_context(mode=context.GRAPH_MODE, device_target=args.device_target,
                         enable_mem_reuse=False)
+    context.set_context(enable_loop_sink=(args.device_target == 'Ascend'))
     # download mnist dataset
     download_dataset()
     # learning rate setting