diff --git a/distributeddatamgr_data_object.spec b/distributeddatamgr_data_object.spec
index b17d5a8..fe6bb54 100644
--- a/distributeddatamgr_data_object.spec
+++ b/distributeddatamgr_data_object.spec
@@ -40,9 +40,9 @@ Developers can easily use distributed object interfaces for object synchronizati
 %prep
 rm -rf %{_builddir}/*
 cp -rf %{build_opt} %{_builddir}/build
-ln -s %{_builddir}/build/build_scripts/build.sh %{_builddir}/build.sh
-ln -s %{_builddir}/build/core/gn/dotfile.gn %{_builddir}/.gn
-ln -s %{_builddir}/build/lite/build.py %{_builddir}/build.py
+[ ! -L "%{_builddir}/build.sh" ] && ln -s %{_builddir}/build/build_scripts/build.sh %{_builddir}/build.sh
+[ ! -L "%{_builddir}/.gn" ] && ln -s %{_builddir}/build/core/gn/dotfile.gn %{_builddir}/.gn
+[ ! -L "%{_builddir}/build.py" ] && ln -s %{_builddir}/build/lite/build.py %{_builddir}/build.py
 cp -rf %{_builddir}/build/openeuler/vendor %{_builddir}/
 cp -rf %{_builddir}/build/openeuler/compiler_gn/* %{_builddir}