diff --git a/src/form/input.wc b/src/form/input.wc
index dc7c302..8db13a8 100644
--- a/src/form/input.wc
+++ b/src/form/input.wc
@@ -612,13 +612,14 @@ export default class Input {
         break
 
       case 'maxlength':
-      case 'minlength':
         if (val === null) {
           this.__INPUT__.removeAttribute(name)
         } else {
           let n = +val
           if (n > 0) {
-            this.__INPUT__.setAttribute(name, +val)
+            this.__INPUT__.setAttribute(name, n)
+          } else {
+            this.removeAttribute(name)
           }
         }
         break
diff --git a/src/form/passwd.wc b/src/form/passwd.wc
index 642563e..fc5fa77 100644
--- a/src/form/passwd.wc
+++ b/src/form/passwd.wc
@@ -93,34 +93,6 @@ li {
   }
 }
 
-/* 额外样式 */
-:host([round]) {
-  border-radius: 26px;
-
-  .label input {
-    padding: 0 10px;
-    margin: 0 18px;
-  }
-
-  .label[prepend] input,
-  .label[append] input {
-    padding: 0 5px;
-  }
-  .label[prepend] input {
-    margin-left: 0;
-  }
-  .label[append] input {
-    margin-right: 0;
-  }
-
-  .prepend {
-    border-radius: 26px 0 0 26px;
-  }
-  .append {
-    border-radius: 0 26px 26px 0;
-  }
-}
-
 :host([size='large']) {
   min-width: 234px;
   .label {
@@ -185,6 +157,33 @@ li {
   }
 }
 
+/* 额外样式 */
+:host([round]) {
+  border-radius: 26px;
+
+  .label input {
+    padding: 0 26px;
+  }
+
+  .label[prepend] input,
+  .label[append] input {
+    padding: 0 5px;
+  }
+  .label[prepend] input {
+    margin-left: 0;
+  }
+  .label[append] input {
+    margin-right: 0;
+  }
+
+  .prepend {
+    border-radius: 26px 0 0 26px;
+  }
+  .append {
+    border-radius: 0 26px 26px 0;
+  }
+}
+
 /* ----- 类型(颜色) ----- */
 :host(:focus-within) {
   box-shadow: 0 0 0 2px var(--color-plain-a);
@@ -275,7 +274,6 @@ li {
 </style>
 
 <script>
-import '../scroll/index'
 import '../icon/index'
 import $ from '../utils'
 
@@ -283,8 +281,8 @@ export default class Passwd {
   props = {
     value: '',
     placeholder: '',
-    maxlength: null,
-    minlength: null,
+    maxlength: 0,
+    minlength: 0,
     autofocus: false,
     readonly: false,
     disabled: false,
@@ -438,13 +436,14 @@ export default class Passwd {
         break
 
       case 'maxlength':
-      case 'minlength':
         if (val === null) {
           this.__INPUT__.removeAttribute(name)
         } else {
           let n = +val
           if (n > 0) {
-            this.__INPUT__.setAttribute(name, +val)
+            this.__INPUT__.setAttribute(name, n)
+          } else {
+            this.removeAttribute(name)
           }
         }
         break
diff --git a/src/form/textarea.wc b/src/form/textarea.wc
index 0004098..6889b8e 100644
--- a/src/form/textarea.wc
+++ b/src/form/textarea.wc
@@ -272,15 +272,21 @@ export default class Textarea {
         break
 
       case 'maxlength':
-      case 'minlength':
-        if (val === null) {
-          this.__INPUT__.removeAttribute(name)
-          this.props[name] = 0
-        } else {
-          let n = +val
-          if (n > 0) {
-            this.__INPUT__.setAttribute(name, n)
-            this.props[name] = n
+        {
+          let len = this.value.length
+          if (val === null) {
+            this.__INPUT__.removeAttribute(name)
+            this.props.maxlength = 0
+            this.__STAT__.textContent = `${len}/∞`
+          } else {
+            let n = +val
+            if (n > 0) {
+              this.__INPUT__.setAttribute(name, n)
+              this.props.maxlength = n
+              this.__STAT__.textContent = `${len}/${n}`
+            } else {
+              this.removeAttribute(name)
+            }
           }
         }
         break