diff --git a/api/internal/pkg/scheduler/scheduler.go b/api/internal/pkg/scheduler/scheduler.go
index 35613c78..235194ad 100644
--- a/api/internal/pkg/scheduler/scheduler.go
+++ b/api/internal/pkg/scheduler/scheduler.go
@@ -54,6 +54,17 @@ func (s *scheduler) AssignAndSchedule() error {
 		return nil
 	}
 
+	// 标签匹配后，未找到ParticipantIds
+	if len(s.participantIds) == 0 {
+		return errors.New("未找到匹配的ParticipantIds")
+	}
+
+	// ParticipantIds 返回唯一值
+	if len(s.participantIds) == 1 {
+		s.task.ParticipantId = s.participantIds[0]
+		return nil
+	}
+
 	//生成算法所需参数
 	task, providerList := s.genTaskAndProviders()