diff --git a/interfaces/inner_api/file_access/src/file_access_ext_stub.cpp b/interfaces/inner_api/file_access/src/file_access_ext_stub.cpp
index 23620687f053d0b99435ef1f47562de8ddcc5579..ec8c917c45de1e58e77df7a20c7dedd376782aea 100644
--- a/interfaces/inner_api/file_access/src/file_access_ext_stub.cpp
+++ b/interfaces/inner_api/file_access/src/file_access_ext_stub.cpp
@@ -567,6 +567,11 @@ ErrCode FileAccessExtStub::CmdQuery(MessageParcel &data, MessageParcel &reply)
         FinishTrace(HITRACE_TAG_FILEMANAGEMENT);
         return E_IPCS;
     }
+    if (count > FILE_RESULT_TYPE.size()){
+        HILOG_ERROR(" The number of query operations exceeds %{public}d ",FILE_RESULT_TYPE.size());
+        FinishTrace(HITRACE_TAG_FILEMANAGEMENT);
+        return E_IPCS;
+    }
     std::vector<std::string> columns;
     for (int64_t i = 0; i < count; i++) {
         columns.push_back(data.ReadString());