diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9f46d07244b87fd6d700d0456d4358cfb67dc3cb..a580b5f486a2163510fc29af62abb8070116b1e8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -211,6 +211,11 @@ if(MSVC OR WIN32)
     # on windows need append VS_PATH/VC/Tools/Llvm/x64/lib/clang/${CMAKE_CXX_COMPILER_VERSION}/lib/windows
     # and VS_PATH/VC/Tools/Llvm/lib/clang/${CMAKE_CXX_COMPILER_VERSION}/lib/windows to PATH env
     if (MGE_BUILD_WITH_ASAN)
+        message(WARNING "please do (set)export ASAN_OPTIONS=windows_hook_rtl_allocators=true when run test after build finish, caused by we link asan dll!!")
+        if(${CMAKE_BUILD_TYPE} STREQUAL "Debug")
+            message(WARNING "Windows AddressSanitizer doesn't support linking with debug runtime libraries yet, which means do not support CMAKE_BUILD_TYPE=Debug")
+            message(FATAL_ERROR "Please build with RelWithDebInfo or Release by : EXTRA_CMAKE_ARGS=\"-DMGE_BUILD_WITH_ASAN=ON -DCMAKE_BUILD_TYPE=RelWithDebInfo ...\"")
+        endif()
         if("$ENV{VS_PATH}" STREQUAL "")
             message(FATAL_ERROR "can not find VS_PATH, please export Visual Studio root dir to VS_PATH env")
         endif()
@@ -239,6 +244,12 @@ if(MSVC OR WIN32)
         link_libraries(${WINDOWS_ASAN_DLL_NAME})
         link_libraries(${WINDOWS_ASAN_RUNTIME_THUNK_NAME})
         set(WIN_FLAGS "/Od -DNDEBUG -fsanitize=address")
+        # windows Llvm asan do not take effect when /O2
+        # RELWITHDEBINFO default value is /O2, so override it
+        set(CMAKE_C_FLAGS_RELWITHDEBINFO "/Zi /Od /Ob1 /DNDEBUG")
+        set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/Zi /Od /Ob1 /DNDEBUG")
+        set(CMAKE_C_FLAGS_RELEASE "/Zi /Od /Ob1 /DNDEBUG")
+        set(CMAKE_CXX_FLAGS_RELEASE "/Zi /Od /Ob1 /DNDEBUG")
     else()
         set(WIN_FLAGS "/O2")
     endif()