diff --git a/src/views/mmlManage/udmOperate/index.vue b/src/views/mmlManage/udmOperate/index.vue
index 25645ed1..25d1eea2 100644
--- a/src/views/mmlManage/udmOperate/index.vue
+++ b/src/views/mmlManage/udmOperate/index.vue
@@ -183,9 +183,9 @@ function fnSendMML() {
       if (res.code === RESULT_CODE_SUCCESS) {
         let resultArr = res.data;
         for (let i = 0; i < resultArr.length; i++) {
-          const str = resultArr[i];
+          const str = resultArr[i] || "";
           const logStr = str.replace(/(\r\n|\n)/g, '\n');
-          const cmdStr = cmdArr[i];
+          const cmdStr = cmdArr[i] || "";
           state.mmlCmdLog += `${cmdStr}\n${logStr}\n`;
         }
       } else {