diff --git a/internal/service/chat_service.go b/internal/service/chat_service.go
index ff86d43..da5b683 100644
--- a/internal/service/chat_service.go
+++ b/internal/service/chat_service.go
@@ -452,8 +452,12 @@ func (s *chatServiceImpl) SendMessage(ctx context.Context, senderID string, conv
 		}
 		convType := conv.Type
 		convName := ""
+		groupID := ""
+		groupAvatar := ""
 		if conv.Type == model.ConversationTypeGroup && conv.Group != nil {
 			convName = conv.Group.Name
+			groupID = conv.Group.ID
+			groupAvatar = conv.Group.Avatar
 		}
 		allTargetIDs := make([]string, 0, len(participants))
 		for _, p := range participants {
@@ -469,9 +473,9 @@ func (s *chatServiceImpl) SendMessage(ctx context.Context, senderID string, conv
 			offlineTargetIDs = allTargetIDs
 		}
 		if len(offlineTargetIDs) > 0 {
-			go func(ids []string, sender ChatMessageSender) {
+			go func(ids []string, sender ChatMessageSender, gid string, gavatar string) {
 				for _, uid := range ids {
-					if pushErr := s.pushSvc.PushChatMessage(context.Background(), uid, conversationID, &sender, convType, convName, message); pushErr != nil {
+					if pushErr := s.pushSvc.PushChatMessage(context.Background(), uid, conversationID, &sender, convType, convName, message, gid, gavatar); pushErr != nil {
 						zap.L().Debug("push chat message failed",
 							zap.String("userID", uid),
 							zap.String("conversationID", conversationID),
@@ -479,7 +483,7 @@ func (s *chatServiceImpl) SendMessage(ctx context.Context, senderID string, conv
 						)
 					}
 				}
-			}(offlineTargetIDs, sender)
+			}(offlineTargetIDs, sender, groupID, groupAvatar)
 		}
 	}
 
diff --git a/internal/service/push_service.go b/internal/service/push_service.go
index 008c6f6..6f50848 100644
--- a/internal/service/push_service.go
+++ b/internal/service/push_service.go
@@ -54,7 +54,7 @@ type PushService interface {
 
 	// 聊天消息推送（含免打扰检查）
 	// 该方法会：1. 检查用户是否在线（在线则跳过）；2. 检查会话免打扰（免打扰则跳过）；3. 通过 JPush 推送
-	PushChatMessage(ctx context.Context, userID string, conversationID string, sender *ChatMessageSender, convType model.ConversationType, convName string, message *model.Message) error
+	PushChatMessage(ctx context.Context, userID string, conversationID string, sender *ChatMessageSender, convType model.ConversationType, convName string, message *model.Message, groupID string, groupAvatar string) error
 
 	// 系统消息推送
 	PushSystemMessage(ctx context.Context, userID string, msgType, title, content string, data map[string]any) error
@@ -686,7 +686,7 @@ func (s *pushServiceImpl) doRetry() int {
 
 // PushChatMessage 推送聊天消息给离线用户
 // 检查用户在线状态和免打扰设置，仅对离线且未免打扰的用户通过 JPush 推送
-func (s *pushServiceImpl) PushChatMessage(ctx context.Context, userID string, conversationID string, sender *ChatMessageSender, convType model.ConversationType, convName string, message *model.Message) error {
+func (s *pushServiceImpl) PushChatMessage(ctx context.Context, userID string, conversationID string, sender *ChatMessageSender, convType model.ConversationType, convName string, message *model.Message, groupID string, groupAvatar string) error {
 	// 1. 用户在线则跳过（已通过 WebSocket 收到消息）
 	if s.wsHub != nil && s.wsHub.HasClients(userID) {
 		return nil
@@ -743,6 +743,11 @@ func (s *pushServiceImpl) PushChatMessage(ctx context.Context, userID string, co
 		"sender_avatar":     sender.Avatar,
 		"category":          string(message.Category),
 	}
+	if convType == model.ConversationTypeGroup {
+		extras["group_id"] = groupID
+		extras["group_name"] = convName
+		extras["group_avatar"] = groupAvatar
+	}
 	if message.Category == model.CategoryNotification && message.ExtraData != nil {
 		title = message.ExtraData.ActorName
 		if title == "" {
@@ -756,7 +761,10 @@ func (s *pushServiceImpl) PushChatMessage(ctx context.Context, userID string, co
 	}
 
 	notification := jpush.BuildNotification(title, content, "chat_message", extras)
-	if sender.Avatar != "" {
+	// 群聊用群头像，私聊用发送者头像
+	if convType == model.ConversationTypeGroup && groupAvatar != "" {
+		notification.Android.LargeIcon = groupAvatar
+	} else if sender.Avatar != "" {
 		notification.Android.LargeIcon = sender.Avatar
 	}
 	if _, pushErr := s.jpushClient.PushByRegistrationIDs(regIDs, notification); pushErr != nil {