diff --git a/mindspore/ccsrc/session/ascend_session.cc b/mindspore/ccsrc/session/ascend_session.cc
index 75e0d13c7b..6ba7ad4256 100644
--- a/mindspore/ccsrc/session/ascend_session.cc
+++ b/mindspore/ccsrc/session/ascend_session.cc
@@ -550,7 +550,6 @@ void AscendSession::InitRuntimeResource() {
 
 void AscendSession::HardwareOptimize(const std::shared_ptr<KernelGraph> &kernel_graph) const {
   MS_LOG(INFO) << "HardwareOptimize start!";
-  device::ascend::KernelPreBuild(kernel_graph.get());
   opt::AscendBackendOptimization(kernel_graph);
   MS_EXCEPTION_IF_NULL(kernel_graph);
   kernel_graph->SetExecOrderByDefault();