In recent years, psychological crises of students in primary and secondary schools haveoccurred frequently, and the development trend of “higher visibility” and “younger age” has beenpresented. However, many full-time and part-time mental health teachers in primary and secondaryschools are lack of teachers and inadequate staffing, which has not been able to well radiate the mentalhealth education of students in the whole school, and it is difficult to meet the growing demand for mentalhealth services of students. In THIS context, our country has created THE psychological committeemember system with Chinese characteristics, with the purpose of making the working mechanismof mental health education in universities, middle schools and primary schools more comprehensiveand efficient. However, at present, psychological committee members still have difficulties such as lowidentity, insufficient professional knowledge, insufficient organizational ability, and low sense of workefficacy. Therefore, this study intends to design a set of group counseling intervention training programfor psychological committee members’ competency training, and evaluate the intervention effect of groupcounseling on the competency of middle school psychological committee members, so as to providecertain theoretical support and guidance for improving the mental health education in middle schooland the related research and intervention of psychological committee members. Methods: A total of 24psychological committee members from each class of a middle school were randomly assigned to theexperimental group and the control group, including 12 in the experimental group and 12 in the controlgroup. The experimental group received group counseling intervention training twice a week, while thecontrol group received no treatment. Results: Before the group counseling intervention training, there wasno significant difference in the indicators between the experimental group and the control group (p>0.05).After group counseling intervention training, the improvement level of all dimensions and total score ofpsychological committee competency scale in the experimental group was higher than that in the controlgroup. There were significant differences in teamwork, work attitude, professional knowledge and totalscore between the experimental group and the control group (p<0.05). There were significant differencesin the dimensions of self-cognition, group cooperation, personality traits, professional knowledge andtotal scores in the experimental group (p<0.05). Conclusion: As an effective form of psychologicalintervention, group counseling can effectively improve the competency level of middle school classpsychological committee members.