diff --git a/LvglApplication/CMakeLists.txt b/LvglApplication/CMakeLists.txt
index 8c66e85..413ca21 100644
--- a/LvglApplication/CMakeLists.txt
+++ b/LvglApplication/CMakeLists.txt
@@ -5,6 +5,7 @@ project(LvglApplication)
 find_package(SDL2 REQUIRED)
 
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -s USE_SDL=2")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2 -s USE_SDL=2")
 
 # 使用这个可以帮助查看如何使用和集成wasm
 set(CMAKE_EXECUTABLE_SUFFIX ".html")