diff --git a/internal/controller/admin/admin_post_controller.go b/internal/controller/admin/admin_post_controller.go
index 8e488cd..7e7633d 100644
--- a/internal/controller/admin/admin_post_controller.go
+++ b/internal/controller/admin/admin_post_controller.go
@@ -116,7 +116,13 @@ func (ctrl *AdminPostController) Lock(c *gin.Context) {
 		return
 	}
 
-	if err := ctrl.postService.Lock(uint(id)); err != nil {
+	var req model.PostLockRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		common.Error(c, http.StatusBadRequest, "请填写锁定理由")
+		return
+	}
+
+	if err := ctrl.postService.Lock(uint(id), req.Reason); err != nil {
 		if errors.Is(err, common.ErrPostNotFound) || errors.Is(err, common.ErrPostCannotLock) {
 			common.Error(c, http.StatusBadRequest, err.Error())
 		} else {
diff --git a/internal/controller/admin/interfaces.go b/internal/controller/admin/interfaces.go
index 14e2337..d29f228 100644
--- a/internal/controller/admin/interfaces.go
+++ b/internal/controller/admin/interfaces.go
@@ -42,7 +42,7 @@ type adminPostUseCase interface {
 	ListPendingRevisions(keyword string, page, pageSize int) ([]model.Post, int64, error)
 	Approve(postID uint) error
 	Reject(postID uint, reason string) error
-	Lock(postID uint) error
+	Lock(postID uint, reason string) error
 	Unlock(postID uint) error
 	Restore(postID uint) error
 }
diff --git a/internal/controller/studio_controller.go b/internal/controller/studio_controller.go
index 1bb98ec..4ffe6da 100644
--- a/internal/controller/studio_controller.go
+++ b/internal/controller/studio_controller.go
@@ -154,7 +154,6 @@ func (ctrl *StudioController) WritePage(c *gin.Context) {
 					"Post":      post,
 					"ActiveTab": "write",
 					"ExtraCSS":  "/static/css/studio.css",
-					"StatusNames": common.PostStatusDisplayNames,
 				}))
 				return
 			}
diff --git a/internal/model/dto.go b/internal/model/dto.go
index 93787b3..4a486dd 100644
--- a/internal/model/dto.go
+++ b/internal/model/dto.go
@@ -47,6 +47,11 @@ type PostRejectRequest struct {
 	Reason string `json:"reason" binding:"required,min=1,max=500"`
 }
 
+// PostLockRequest 锁定请求
+type PostLockRequest struct {
+	Reason string `json:"reason" binding:"required,min=1,max=500"`
+}
+
 // PostListQuery 列表查询参数
 type PostListQuery struct {
 	Keyword  string `form:"keyword"`
diff --git a/internal/model/post.go b/internal/model/post.go
index 77a85ce..8103e80 100644
--- a/internal/model/post.go
+++ b/internal/model/post.go
@@ -15,6 +15,7 @@ type Post struct {
 	UserID       uint           `gorm:"index;not null" json:"user_id"`
 	Status       string         `gorm:"type:varchar(20);index;default:draft;not null" json:"status"`
 	IsLocked     bool           `gorm:"default:false" json:"is_locked"`
+	LockReason   string         `gorm:"type:varchar(500);default:''" json:"lock_reason,omitempty"`
 	PendingTitle string         `gorm:"type:varchar(200);default:''" json:"pending_title,omitempty"`
 	PendingBody  string         `gorm:"type:text" json:"pending_body,omitempty"`
 	RejectReason string         `gorm:"type:varchar(500);default:''" json:"reject_reason,omitempty"`
diff --git a/internal/service/post_service.go b/internal/service/post_service.go
index 6ce2d3c..2916107 100644
--- a/internal/service/post_service.go
+++ b/internal/service/post_service.go
@@ -341,7 +341,7 @@ func (s *PostService) Reject(postID uint, reason string) error {
 }
 
 // Lock 锁定：设置 IsLocked 标志，禁止编辑，不改变帖子发布状态
-func (s *PostService) Lock(postID uint) error {
+func (s *PostService) Lock(postID uint, reason string) error {
 	post, err := s.findPost(postID)
 	if err != nil {
 		return err
@@ -351,6 +351,7 @@ func (s *PostService) Lock(postID uint) error {
 		return common.ErrPostCannotLock
 	}
 	post.IsLocked = true
+	post.LockReason = reason
 	return s.repo.Update(post)
 }
 
@@ -364,6 +365,7 @@ func (s *PostService) Unlock(postID uint) error {
 		return common.ErrPostCannotUnlock
 	}
 	post.IsLocked = false
+	post.LockReason = ""
 	return s.repo.Update(post)
 }
 
diff --git a/templates/MetaLab-2026/html/studio/write.html b/templates/MetaLab-2026/html/studio/write.html
index 5bc44e7..2f33f19 100644
--- a/templates/MetaLab-2026/html/studio/write.html
+++ b/templates/MetaLab-2026/html/studio/write.html
@@ -13,7 +13,9 @@
                 <div class="locked-banner-icon">🔒</div>
                 <div>
                     <strong>这篇文章已被锁定，无法编辑。</strong>
-                    <p>如需解锁请联系管理员。当前状态：{{if $.StatusNames}}{{index $.StatusNames .Post.Status}}、已锁定{{end}}</p>
+                    {{if .Post.LockReason}}
+                    <p>锁定理由：{{.Post.LockReason}}</p>
+                    {{end}}
                 </div>
             </div>
             {{end}}
diff --git a/templates/admin/static/js/posts.js b/templates/admin/static/js/posts.js
index aae9241..1f9f53c 100644
--- a/templates/admin/static/js/posts.js
+++ b/templates/admin/static/js/posts.js
@@ -47,7 +47,9 @@
 
     // 锁定
     handleClick('.post-lock', function(id) {
-        api('/api/admin/posts/' + id + '/lock', 'POST')
+        var reason = prompt('请输入锁定理由（必填）：');
+        if (!reason || !reason.trim()) return;
+        api('/api/admin/posts/' + id + '/lock', 'POST', { reason: reason.trim() })
             .then(function(d) { if (d.success) refreshPage(); else alert(d.message); })
             .catch(function() { alert('操作失败'); });
     });