Objective To evaluate self-disclosure group counseling for improving the self-disclosure effectiveness of middle school students so as to provide evidences for increasing the level of their self-disclosure and enhancing their interpersonal efficacy.Method 123second-grade students of two classes in a middle school were randomly selected.63students were in the experimental group and 60were in the control group.The experimental group were given self-disclosure group counseling once a week for eight weeks and the control group were given conventional learning.All students in both groups finished questionnaires about self-disclosure and interpersonal efficacy before and after their counseling.Results Scores in the experimental group for the content of self-disclosure

cognition of functions

the trust and initiative of interpersonal efficacy were higher than those of the control group;the differences were statistically significant（P<0.05）.Differences of scores on these four dimensions in the experimental group before and after intervention were statistically significant（P< 0.05）.Conclusion Self-disclosure group counseling can effectively improve the self-disclosure and interpersonal efficacy of middle school students and the effect is significant.