diff --git a/backend/internal/admin/api.go b/backend/internal/admin/api.go
index 1403e2d..4332296 100644
--- a/backend/internal/admin/api.go
+++ b/backend/internal/admin/api.go
@@ -876,6 +876,11 @@ func (a *API) adminReaderBan(w http.ResponseWriter, r *http.Request, id int64) {
 		httpx.BadRequest(w, "invalid body")
 		return
 	}
+	// 站主身份（管理员会话映射出来的读者）不允许禁言
+	if rd, err := a.Store.GetReader(id); err == nil && rd.Provider == "admin" {
+		httpx.BadRequest(w, "不能禁言站主身份")
+		return
+	}
 	if err := a.Store.SetReaderBanned(id, in.Banned); err != nil {
 		if errors.Is(err, store.ErrNotFound) {
 			httpx.NotFound(w)
diff --git a/backend/internal/api/api.go b/backend/internal/api/api.go
index 1ea64a1..0b87f5d 100644
--- a/backend/internal/api/api.go
+++ b/backend/internal/api/api.go
@@ -27,6 +27,11 @@ type API struct {
 	// 评论区读者会话与 GitHub OAuth（main.go 装配）
 	ReaderSessions *auth.ReaderSessions
 	GH             auth.GitHub
+	// AdminSessions 是后台管理员会话验证器（admin.Sessions 满足它）。
+	// 管理员登录后台后无需再走读者登录即可用站主身份评论。
+	AdminSessions interface {
+		Verify(token string) (string, error)
+	}
 }
 
 func (a *API) Routes() http.Handler {
diff --git a/backend/internal/api/comments.go b/backend/internal/api/comments.go
index 01d1d1d..1921166 100644
--- a/backend/internal/api/comments.go
+++ b/backend/internal/api/comments.go
@@ -30,17 +30,50 @@ const (
 	editWindow     = 10 * time.Minute
 )
 
-// readerID 从会话 cookie 解出读者 ID；匿名返回 false
+// readerID 从会话 cookie 解出读者 ID；匿名返回 false。
+// 后台管理员已登录（one_session）时直接映射为站主读者身份——
+// 站主发评论不必再走一遍 GitHub 登录。
 func (a *API) readerID(r *http.Request) (int64, bool) {
-	ck, err := r.Cookie(auth.ReaderCookie)
-	if err != nil {
+	rd, ok, err := a.resolveReader(r)
+	if err != nil || !ok {
 		return 0, false
 	}
-	id, err := a.ReaderSessions.Verify(ck.Value)
-	if err != nil {
-		return 0, false
+	return rd.ID, true
+}
+
+// resolveReader 解出当前访客的读者身份：读者会话优先，
+// 其次是后台管理员会话（自动 upsert 一个 provider=admin 的站主读者）。
+func (a *API) resolveReader(r *http.Request) (model.Reader, bool, error) {
+	if ck, err := r.Cookie(auth.ReaderCookie); err == nil && ck.Value != "" {
+		if id, verr := a.ReaderSessions.Verify(ck.Value); verr == nil {
+			rd, gerr := a.Store.GetReader(id)
+			if gerr == nil {
+				return rd, true, nil
+			}
+		}
 	}
-	return id, true
+	if a.AdminSessions != nil {
+		if ck, err := r.Cookie("one_session"); err == nil && ck.Value != "" {
+			if _, verr := a.AdminSessions.Verify(ck.Value); verr == nil {
+				rd, oerr := a.ownerReader()
+				if oerr == nil {
+					return rd, true, nil
+				}
+			}
+		}
+	}
+	return model.Reader{}, false, nil
+}
+
+// ownerReader 取（或创建）站主评论身份：provider=admin，名字用站点作者名。
+func (a *API) ownerReader() (model.Reader, error) {
+	name := "站主"
+	if st, err := a.Store.GetSettings(); err == nil && st.AuthorName != "" {
+		name = st.AuthorName
+	}
+	return a.Store.UpsertReader(model.Reader{
+		Provider: "admin", Handle: a.Cfg.AdminUser, Name: name,
+	})
 }
 
 func (a *API) authProviders(w http.ResponseWriter, r *http.Request) {
@@ -55,13 +88,11 @@ func (a *API) authProviders(w http.ResponseWriter, r *http.Request) {
 
 func (a *API) authMe(w http.ResponseWriter, r *http.Request) {
 	var user any // 匿名时 {user: null}，前端判空即「未登录」
-	if id, ok := a.readerID(r); ok {
-		if reader, err := a.Store.GetReader(id); err == nil {
-			user = map[string]any{
-				"id": reader.ID, "name": reader.Name, "handle": reader.Handle,
-				"avatar_url": reader.AvatarURL, "url": reader.URL,
-				"provider": reader.Provider, "is_owner": false, "banned": reader.Banned,
-			}
+	if reader, ok, err := a.resolveReader(r); err == nil && ok {
+		user = map[string]any{
+			"id": reader.ID, "name": reader.Name, "handle": reader.Handle,
+			"avatar_url": reader.AvatarURL, "url": reader.URL,
+			"provider": reader.Provider, "is_owner": reader.Provider == "admin", "banned": reader.Banned,
 		}
 	}
 	httpx.OK(w, map[string]any{"user": user})
@@ -180,19 +211,19 @@ func (a *API) listComments(w http.ResponseWriter, r *http.Request) {
 }
 
 // createComment 发表评论（含回复）。登录 + 未禁言 + 评论开关开着；
-// 审核开关开着时新评论进「待审」。
+// 审核开关开着时新评论进「待审」。站主身份（管理员会话）不受禁言与审核约束。
 func (a *API) createComment(w http.ResponseWriter, r *http.Request) {
-	readerID, ok := a.readerID(r)
-	if !ok {
-		httpx.Error(w, http.StatusUnauthorized, "登录后才能评论")
-		return
-	}
-	reader, err := a.Store.GetReader(readerID)
+	reader, ok, err := a.resolveReader(r)
 	if err != nil {
 		httpx.Error(w, http.StatusUnauthorized, "登录已过期，刷新页面重新登录")
 		return
 	}
-	if reader.Banned {
+	if !ok {
+		httpx.Error(w, http.StatusUnauthorized, "登录后才能评论")
+		return
+	}
+	isOwner := reader.Provider == "admin"
+	if reader.Banned && !isOwner {
 		httpx.Error(w, http.StatusForbidden, "你已被禁言，暂时无法评论")
 		return
 	}
@@ -246,11 +277,11 @@ func (a *API) createComment(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 	status := "visible"
-	if st.CommentsReview {
+	if st.CommentsReview && !isOwner {
 		status = "pending"
 	}
 	c, err := a.Store.CreateComment(model.Comment{
-		PostID: in.PostID, UserID: readerID, ParentID: in.ParentID, RootID: root,
+		PostID: in.PostID, UserID: reader.ID, ParentID: in.ParentID, RootID: root,
 		BodyMd: body, BodyHTML: render.Markdown(body), Status: status,
 	})
 	if err != nil {
diff --git a/backend/main.go b/backend/main.go
index 362b2f4..363187c 100644
--- a/backend/main.go
+++ b/backend/main.go
@@ -63,6 +63,8 @@ func main() {
 
 	// 评论区的读者会话（cookie one_reader），30 天有效
 	readerSessions := auth.NewReaderSessions(cfg.SessionSec, 30*24*time.Hour)
+	// 后台管理员会话（cookie one_session），前台评论也用它识别站主身份
+	adminSessions := admin.NewSessions(cfg.SessionSec, 7*24*time.Hour)
 
 	public := &api.API{
 		Store:          st,
@@ -70,8 +72,9 @@ func main() {
 		Blobs:          blobs,
 		ReaderSessions: readerSessions,
 		GH:             auth.GitHub{ClientID: cfg.GitHubClientID, ClientSecret: cfg.GitHubClientSecret},
+		AdminSessions:  adminSessions,
 	}
-	adminAPI := admin.NewAPI(st, cfg, admin.NewSessions(cfg.SessionSec, 7*24*time.Hour))
+	adminAPI := admin.NewAPI(st, cfg, adminSessions)
 	adminAPI.Blobs = blobs
 	adminAPI.Blobs = blobs
 
diff --git a/frontend/src/components/comments/CommentItem.vue b/frontend/src/components/comments/CommentItem.vue
index 3bb4094..cab66fe 100644
--- a/frontend/src/components/comments/CommentItem.vue
+++ b/frontend/src/components/comments/CommentItem.vue
@@ -25,14 +25,14 @@ const props = defineProps({
 const s = props.api.s
 const EDIT_WINDOW_MS = 10 * 60 * 1000
 
-const name = computed(() => (props.c.author && props.c.author.name) || '已注销用户')
+const name = computed(() => (props.c.user && props.c.user.name) || '已注销用户')
 const relativeTime = computed(() => relativeDate(props.c.created_at))
-const isOwner = computed(() => !!(props.c.author && props.c.author.is_owner))
-const isMine = computed(() => !!(reader.user && props.c.author && reader.user.id === props.c.author.id))
+const isOwner = computed(() => !!(props.c.user && props.c.user.provider === 'admin'))
+const isMine = computed(() => !!(reader.user && props.c.user && reader.user.id === props.c.user.id))
 
 // 外链：优先作者自填的 url，其次 GitHub 主页
 const authorHref = computed(() => {
-  const a = props.c.author
+  const a = props.c.user
   if (!a) return ''
   if (a.url) return a.url
   if (a.provider === 'github' && a.handle) return `https://github.com/${a.handle}`
@@ -41,12 +41,11 @@ const authorHref = computed(() => {
 
 const canEdit = computed(() => {
   if (props.c.is_deleted) return false
-  if (isOwner.value) return true
   if (!isMine.value) return false
   const t = new Date(props.c.created_at).getTime()
   return Number.isFinite(t) && Date.now() - t <= EDIT_WINDOW_MS
 })
-const canDelete = computed(() => !props.c.is_deleted && (isMine.value || isOwner.value))
+const canDelete = computed(() => !props.c.is_deleted && isMine.value)
 
 const replying = computed(() => s.replyTo && s.replyTo.id === props.c.id)
 const editing = computed(() => s.editing && s.editing.id === props.c.id)
@@ -118,7 +117,7 @@ const atInline = computed(
 function replyNameOf(r) {
   if (!r.parent_id || r.parent_id === props.c.id) return ''
   const t = (props.c.replies || []).find((x) => x.id === r.parent_id)
-  return t ? (t.author && t.author.name) || '' : ''
+  return t ? (t.user && t.user.name) || '' : ''
 }
 </script>
 
@@ -126,15 +125,15 @@ function replyNameOf(r) {
   <li class="cm-item" :class="{ 'is-deleted': c.is_deleted, 'is-reply': depth > 0 }">
     <div class="cm-av" :class="{ 'is-owner': isOwner }">
       <img
-        v-if="c.author && c.author.avatar_url"
-        :src="c.author.avatar_url"
+        v-if="c.user && c.user.avatar_url"
+        :src="c.user.avatar_url"
         :alt="`${name} 的头像`"
         loading="lazy"
       >
       <span v-else class="cm-av-fb">{{ name.slice(0, 1) }}</span>
-      <i v-if="c.author && c.author.provider" class="cm-pv" :title="PROVIDER_LABEL[c.author.provider] || c.author.provider">
-        <svg v-if="BRANDS[c.author.provider]" viewBox="0 0 24 24" aria-hidden="true">
-          <path :d="BRANDS[c.author.provider]" />
+      <i v-if="c.user && c.user.provider" class="cm-pv" :title="PROVIDER_LABEL[c.user.provider] || c.user.provider">
+        <svg v-if="BRANDS[c.user.provider]" viewBox="0 0 24 24" aria-hidden="true">
+          <path :d="BRANDS[c.user.provider]" />
         </svg>
       </i>
     </div>