diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5b17b72..a24779f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,13 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
+# 可执行文件输出目录：统一放到 <build>/bin 下（避免落在 build/src/ 等子目录）
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
+foreach(cfg IN ITEMS Debug Release RelWithDebInfo MinSizeRel)
+  string(TOUPPER "${cfg}" cfg_upper)
+  set("CMAKE_RUNTIME_OUTPUT_DIRECTORY_${cfg_upper}" "${CMAKE_BINARY_DIR}/bin")
+endforeach()
+
 # ANTLR 生成代码目录约定（不进仓库，生成在构建目录）
 set(ANTLR4_GENERATED_DIR "${CMAKE_BINARY_DIR}/generated/antlr4")