Abstract: In order to improve the mental health level of college students, this study took The 90 Symptoms Self-rating Scale (SCL-90) as the pre- and post-measurement table, and applied SPSS 26 to analyze the correlation of the pre- and post-test mentalhealth level data, and the results showed that there were significant differences in mental health level before and after intervention. The application of the intervention mode of group work in ideological and political work should be promoted in colleges and universities.