To explore the intervention effect of group counseling on self-efficacy of secondary vocational
students and whether individual mental health level and vocational identity will be affected after the
change of self-efficacy. The students from a secondary vocational school in Tianjin were randomly
divided into experimental group (n=30) and control group (n=22). Among them, the experimental
group was given group psychological counseling for eight weeks, and the control group was given mental
health education for the same time. General self-efficacy scale (GSES),Mental Health Test (MHT),and
Occupational identity scale (OIS) were used to evaluate the level of general self-efficacy ,mental health,
and vocational identity, and of the two groups before and after intervention. The results indicate that
after eight-week group psychological counseling, the scores of self-efficacy of secondary vocational
students in the experimental group were significantly higher than those in the control group (t=1.73,
p<0.05).The mental health score of secondary vocational school students in the experimental group was
significantly higher than that in the control group (t=-1.83, p<0.05). The scores of career delay and career
achievement in the experimental group were significantly higher than those in the control group(t=3.21,
2.37, p<0.05), while the scores of occupational diffusion and premature closure in the experimental group
were significantly lower than those in the control group (t=-2.32, -2.02, p<0.05). Conclusion: Group
psychological counseling can improve the mental health level and occupational identity of secondary
vocational students by improving their self-efficacy.