diff --git a/platform/dingtalk/dingtalk.go b/platform/dingtalk/dingtalk.go
index 87388ac..563b4bc 100644
--- a/platform/dingtalk/dingtalk.go
+++ b/platform/dingtalk/dingtalk.go
@@ -82,6 +82,9 @@ type Platform struct {
 	cardThrottleMs  int
 	degradeUntil    time.Time
 	degradeMu       sync.Mutex
+
+	// Admin tag configuration
+	adminUsers map[string]bool // user IDs that get "[管理员]" tag
 }
 
 func New(opts map[string]any) (core.Platform, error) {
@@ -132,6 +135,18 @@ func New(opts map[string]any) (core.Platform, error) {
 		cardThrottleMs = v
 	}
 
+	// Parse admin user list
+	adminUsers := make(map[string]bool)
+	if raw, ok := opts["admin_users"]; ok {
+		if list, ok := raw.([]any); ok {
+			for _, id := range list {
+				if s, ok := id.(string); ok && s != "" {
+					adminUsers[s] = true
+				}
+			}
+		}
+	}
+
 	return &Platform{
 		clientID:              clientID,
 		clientSecret:          clientSecret,
@@ -144,6 +159,7 @@ func New(opts map[string]any) (core.Platform, error) {
 		cardTemplateID:        cardTemplateID,
 		cardTemplateKey:       cardTemplateKey,
 		cardThrottleMs:        cardThrottleMs,
+		adminUsers:            adminUsers,
 	}, nil
 }
 
@@ -273,6 +289,12 @@ func (p *Platform) onMessage(data *chatbot.BotCallbackDataModel, richText *richT
 		return
 	}
 
+	// 告诉ai该用户是否是管理员
+	userName := data.SenderNick
+	if p.adminUsers[data.SenderStaffId] {
+		userName += "[管理员]"
+	}
+
 	// Handle richText messages — extract plain text and images from rich content
 	if data.Msgtype == "richText" {
 		text, imageCodes := extractRichText(data.Content)
@@ -299,7 +321,7 @@ func (p *Platform) onMessage(data *chatbot.BotCallbackDataModel, richText *richT
 			SessionKey: sessionKey,
 			Platform:   "dingtalk",
 			UserID:     data.SenderStaffId,
-			UserName:   data.SenderNick,
+			UserName:   userName,
 			ChatName:   data.ConversationTitle,
 			Content:    text,
 			MessageID:  data.MsgId,
@@ -335,7 +357,7 @@ func (p *Platform) onMessage(data *chatbot.BotCallbackDataModel, richText *richT
 		SessionKey: sessionKey,
 		Platform:   "dingtalk",
 		UserID:     data.SenderStaffId,
-		UserName:   data.SenderNick,
+		UserName:   userName,
 		ChatName:   data.ConversationTitle,
 		Content:    messageContent,
 		MessageID:  data.MsgId,
@@ -412,11 +434,15 @@ func (p *Platform) handleAudioMessage(data *chatbot.BotCallbackDataModel, sessio
 		slog.Error("dingtalk: failed to download audio", "error", err)
 		// Fallback to recognition text if available
 		if recognition != "" {
+			userName := data.SenderNick
+			if p.adminUsers[data.SenderStaffId] {
+				userName += "[管理员]"
+			}
 			msg := &core.Message{
 				SessionKey: sessionKey,
 				Platform:   "dingtalk",
 				UserID:     data.SenderStaffId,
-				UserName:   data.SenderNick,
+				UserName:   userName,
 				Content:    recognition,
 				MessageID:  data.MsgId,
 				ChannelKey: data.ConversationId,