diff --git a/paddle/fluid/jit/engine/pe_engine.cc b/paddle/fluid/jit/engine/pe_engine.cc
index ddc2de0fc530e32d75ceb61439fda22a68ecc729..a2c6d69d16e4d5ab18a2f8c64ea80315ece829eb 100644
--- a/paddle/fluid/jit/engine/pe_engine.cc
+++ b/paddle/fluid/jit/engine/pe_engine.cc
@@ -31,7 +31,7 @@ static ExecutionStrategy GetExecutionStrategy(const platform::Place &place) {
   auto device_type = platform::Place2DeviceType(place);
   switch (device_type) {
     case platform::DeviceType::CPU: {
-      execution_strategy.num_threads_ = 2;
+      execution_strategy.num_threads_ = 1;
       break;
     }
     case platform::DeviceType::CUDA: {