diff --git a/app/templates/login.html b/app/templates/login.html
index b8eb118..169c669 100644
--- a/app/templates/login.html
+++ b/app/templates/login.html
@@ -15,6 +15,11 @@
             alert('输入不能为空!');
             return false;
         }
+        let reg = /^\S*$/;  // 正则表达式，用于匹配不包含空格的字符串
+                if (!reg.test(password)) {
+                    alert('输入不能包含空格!');
+                    return false;
+                }
         $.post(
             "/login", {'username': username, 'password': password},
             function (response) {
diff --git a/app/templates/reset.html b/app/templates/reset.html
index 3425c97..4834695 100644
--- a/app/templates/reset.html
+++ b/app/templates/reset.html
@@ -12,6 +12,11 @@
                 alert('输入不能为空!');
                 return false;
             }
+            let reg = /^\S*$/;  // 正则表达式，用于匹配不包含空格的字符串
+                if (!reg.test(old_password) || !reg.test(new_password)) {
+                    alert('输入不能包含空格!');
+                    return false;
+                }
             if (new_password !== re_new_password) {
                 alert('新密码不匹配，请重新输入');
                 return false;
diff --git a/app/templates/signup.html b/app/templates/signup.html
index 5b3aafe..8d688f3 100644
--- a/app/templates/signup.html
+++ b/app/templates/signup.html
@@ -16,6 +16,11 @@ You're logged in already! <a href="/logout">Logout</a>.
                 alert('输入不能为空!');
                 return false;
             }
+            let reg = /^\S*$/;  // 正则表达式，用于匹配不包含空格的字符串
+                if (!reg.test(password) || !reg.test(password2)) {
+                    alert('输入不能包含空格!');
+                    return false;
+                }
             if (password !== password2) {
                 alert('确认密码与输入密码不一致！');
                 return false;