diff --git a/interfaces/kits/cj/src/config_policy_ffi.cpp b/interfaces/kits/cj/src/config_policy_ffi.cpp
index 6997cd810dfa055c647c6b636fef066fe1861bbc..3af9e30f524d2cb74e79ae3bcc3776dab0e32f09 100644
--- a/interfaces/kits/cj/src/config_policy_ffi.cpp
+++ b/interfaces/kits/cj/src/config_policy_ffi.cpp
@@ -31,7 +31,7 @@ char** MallocCStringArr(const std::vector<const char*>& origin)
         return nullptr;
     }
     auto size = origin.size();
-    if (size > MAX_MALLOC_LEN) {
+    if (size == 0 || size > MAX_MALLOC_LEN) {
         return nullptr;
     }
     auto arr = static_cast<char**>(malloc(sizeof(char*) * size));