diff --git a/docs/source/tutorials/multi-node_dsv3.2.md b/docs/source/tutorials/multi-node_dsv3.2.md
index c2a840b..8cbd49a 100644
--- a/docs/source/tutorials/multi-node_dsv3.2.md
+++ b/docs/source/tutorials/multi-node_dsv3.2.md
@@ -317,7 +317,6 @@ export HCCL_SOCKET_IFNAME=$nic_name
 export OMP_PROC_BIND=false
 export OMP_NUM_THREADS=10
 export HCCL_BUFFSIZE=1024
-export HCCL_OP_EXPANSION_MODE="AIV"
 export PYTORCH_NPU_ALLOC_CONF="expandable_segments:True"
 
 vllm serve vllm-ascend/DeepSeek-V3.2-Exp-W8A8 \
@@ -362,7 +361,6 @@ export HCCL_SOCKET_IFNAME=$nic_name
 export OMP_PROC_BIND=false
 export OMP_NUM_THREADS=10
 export HCCL_BUFFSIZE=1024
-export HCCL_OP_EXPANSION_MODE="AIV"
 export PYTORCH_NPU_ALLOC_CONF="expandable_segments:True"
 
 vllm serve vllm-ascend/DeepSeek-V3.2-Exp-W8A8 \