diff --git a/src/utils/desensitization.js b/src/utils/desensitization.js
index fcb4cbde2..acc5b952d 100644
--- a/src/utils/desensitization.js
+++ b/src/utils/desensitization.js
@@ -1,4 +1,10 @@
 export default function desensitizeSubstring(inputString, start, end) {
+    if (!inputString) {
+        return ''
+    }
+    if (end >= inputString.length) {
+        end = inputString.length - 1
+    }
     // 保留部分非敏感信息，将敏感信息部分截取掉
     let desensitizedString = inputString.substring(0, start) + "*".repeat(end - start) + inputString.substring(end);
     return desensitizedString;