diff --git a/be/src/common/config.cpp b/be/src/common/config.cpp
index 20f9402e8f2fa58..5637461a5011613 100644
--- a/be/src/common/config.cpp
+++ b/be/src/common/config.cpp
@@ -995,7 +995,7 @@ DEFINE_Bool(enable_file_cache, "false");
 // or use the default storage value:
 //     {"path": "memory", "total_size":53687091200}
 // Both will use the directory "memory" on the disk instead of the real RAM.
-DEFINE_String(file_cache_path, "");
+DEFINE_String(file_cache_path, "[{\"path\":\"${DORIS_HOME}/file_cache\"}]");
 DEFINE_Int64(file_cache_each_block_size, "1048576"); // 1MB
 
 DEFINE_Bool(clear_file_cache, "false");