diff --git a/cmake/cuda.cmake b/cmake/cuda.cmake
index cfe3339e8559b3d1cc928669c2ec6ee697163695..82c4ec14d9ef892047d8e37381cd209e8c98a931 100644
--- a/cmake/cuda.cmake
+++ b/cmake/cuda.cmake
@@ -295,7 +295,7 @@ message(STATUS "NVCC_FLAGS_EXTRA: ${NVCC_FLAGS_EXTRA}")
 set(CUDA_PROPAGATE_HOST_FLAGS OFF)
 # Release/Debug flags set by cmake. Such as -O3 -g -DNDEBUG etc.
 # So, don't set these flags here.
-set(CMAKE_CUDA_STANDARD 17)
+set(CMAKE_CUDA_STANDARD 14)
 
 # (Note) For windows, if delete /W[1-4], /W1 will be added defaultly and conflic with -w
 # So replace /W[1-4] with /W0
diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index 95dace85a528fb1004c19e3149406455a88b98fb..7112e20e6d2df8317542bc605fc28cacbea1db02 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -38,7 +38,7 @@ if(NOT WIN32)
   if(WITH_CINN)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
   else()
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
   endif()
 else()
   set(CMAKE_CXX_STANDARD 17)