diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index a8a6d2d0..69a03ccc 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -25,11 +25,27 @@ SET(
      TS_FILES
      ${CMAKE_CURRENT_SOURCE_DIR}/translations/Dyt_zh_CN.ts
 )
+
+# 控制是否在构建时自动运行 lupdate 更新 TS 文件。
+# 关闭时仅在 TS 变更后编译生成 QM，避免每次构建都重新创建翻译文件。
+option(UPDATE_TRANSLATIONS "Run lupdate to refresh TS files during build" OFF)
 if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
-    qt6_create_translation(QM_FILES ${CMAKE_CURRENT_SOURCE_DIR} ${TS_FILES})
+    if(UPDATE_TRANSLATIONS)
+        # 运行 lupdate + lrelease：更新 TS 并生成 QM（可能导致每次构建都触发）
+        qt6_create_translation(QM_FILES ${CMAKE_CURRENT_SOURCE_DIR} ${TS_FILES})
+    else()
+        # 仅生成 QM，TS 未变化时不重新创建
+        qt_add_translations(QM_FILES TS_FILES ${TS_FILES})
+    endif()
     add_custom_target(translations DEPENDS ${QM_FILES})
 else()
-    qt5_create_translation(QM_FILES ${CMAKE_CURRENT_SOURCE_DIR} ${TS_FILES})
+    if(UPDATE_TRANSLATIONS)
+        # 运行 lupdate + lrelease
+        qt5_create_translation(QM_FILES ${CMAKE_CURRENT_SOURCE_DIR} ${TS_FILES})
+    else()
+        # 仅运行 lrelease 生成 QM
+        qt5_add_translation(QM_FILES ${TS_FILES})
+    endif()
     add_custom_target(translations DEPENDS ${QM_FILES})
     find_package(Qt${QT_VERSION_MAJOR} COMPONENTS WinExtras REQUIRED)
 endif()