diff --git a/frontend/src/views/Register.tsx b/frontend/src/views/Register.tsx
index 4638c67..83fcbb8 100644
--- a/frontend/src/views/Register.tsx
+++ b/frontend/src/views/Register.tsx
@@ -166,7 +166,7 @@ export default function SignUp() {
                                 checkList={[
                                     {
                                         errMsg: "长度在 3-16 之间，由数字、大小写字母、_构成",
-                                        reg: /[0-9a-zA-Z_]{3,16}/
+                                        reg: /^[0-9a-zA-Z_]{3,16}$/
                                     }
                                 ]}
                                 required