Objective: To study the effect of group counseling for improving self-concept pf junior middle school students. Methods: Group counseling was conducted on 10 selected junior middle school students. All members were assessed by PHCSS, SES and SCCS before and after intervention. Results: Group counseling was found to increase the students’ total scores on PHCSS, SES and SCCS, showing significant improvement on their self-esteem, self-consistency and congruence. Conclusion: Group counseling can improve self-concept of junior middle school students.