Useful. The positive psychology tutor program of Tsinghua University Academy of Social Sciences has continuously trained 222 tutors, who have passed the training class, practical class and finally passed the certification class. Instructors who have mastered the intervention methods of positive psychology play an important role in all walks of life in the motherland. As Teacher Fan Fumin said, "Because positive psychology has changed their lives, it may change the professional happiness of the whole industry." , so it is still useful.