diff --git a/mindspore/ccsrc/backend/optimizer/ascend/ascend_backend_optimization.cc b/mindspore/ccsrc/backend/optimizer/ascend/ascend_backend_optimization.cc
index c1bc8ec638a83b2f0fde37ef1c8b7fb45ba061f8..749e95ec9763e47193086f5a72e8c96e900080ec 100644
--- a/mindspore/ccsrc/backend/optimizer/ascend/ascend_backend_optimization.cc
+++ b/mindspore/ccsrc/backend/optimizer/ascend/ascend_backend_optimization.cc
@@ -308,6 +308,7 @@ void RunOpAscendBackendIRFusionOptimization(const std::shared_ptr<session::Kerne
   }
   auto optimizer = std::make_shared<GraphOptimizer>();
   auto ir_fusion_pm = std::make_shared<PassManager>("ir_fusion_pm");
+  ir_fusion_pm->AddPass(std::make_shared<SplitFission>());
   ir_fusion_pm->AddPass(std::make_shared<BnSplit>());
   ir_fusion_pm->AddPass(std::make_shared<LayerNormGradSplit>());
   ir_fusion_pm->AddPass(std::make_shared<TopKSplit>());