diff --git a/admin/css/style.css b/admin/css/style.css
index ed2b45ec..b927d720 100644
--- a/admin/css/style.css
+++ b/admin/css/style.css
@@ -851,6 +851,9 @@ a.operate-reply {
   background: #FFFBCC;
   color: #666; }
 
+.typecho-post-area textarea {
+  resize: none; }
+
 .typecho-post-area #advance-panel-btn {
   color: #999; }
 
@@ -959,6 +962,16 @@ a.operate-reply {
 .edit-media button {
   margin-right: 6px; }
 
+/* 拖动调整 textarea 大小 */
+.resize {
+  display: block;
+  margin: 2px auto 0;
+  border: 1px solid #D9D9D6;
+  border-width: 1px 0;
+  width: 60px;
+  height: 2px;
+  cursor: row-resize; }
+
 /* 拖动排序 */
 .tDnD_whileDrag {
   background-color: #FFFBCC;
diff --git a/admin/scss/style.scss b/admin/scss/style.scss
index 53dac9ea..c1c85775 100644
--- a/admin/scss/style.scss
+++ b/admin/scss/style.scss
@@ -639,6 +639,10 @@ a.operate-reply {
   color: #666;
 }
 
+.typecho-post-area textarea {
+  resize: none;
+}
+
 .typecho-post-area #advance-panel-btn {
   color: #999;
 }
@@ -753,6 +757,16 @@ background: #FFF1A8;
 */
 .edit-media button { margin-right: 6px; }
 
+/* 拖动调整 textarea 大小 */
+.resize {
+  display: block;
+  margin: 2px auto 0;
+  border: 1px solid #D9D9D6;
+  border-width: 1px 0;
+  width: 60px;
+  height: 2px;
+  cursor: row-resize;
+}
 
 /* 拖动排序 */
 .tDnD_whileDrag {
diff --git a/admin/write-post.php b/admin/write-post.php
index f2bbdcb6..0b2bc496 100644
--- a/admin/write-post.php
+++ b/admin/write-post.php
@@ -34,6 +34,7 @@ Typecho_Widget::widget('Widget_Contents_Post_Edit')->to($post);
 
                     <p>
                         <textarea style="height: <?php $options->editorSize(); ?>px" autocomplete="off" id="text" name="text" class="w-100 mono"><?php echo htmlspecialchars($post->text); ?></textarea>
+                        <span class="resize"></span>
                     </p>
 
                     <?php include 'file-upload.php'; ?>