OBJECTIVES: The primary purpose of this study was to evaluate the therapeutic effects of sociodrama on inpatients with schizophrenia. METHODS: The sociodrama group was composed of 20 inpatients with schizophrenia and control group was matched with the sociodrama group. The sociodrama group received 10 sessions of sociodrama therapy over 10 weeks. Assessment was done at the beginning and end of this period. RESULTS: After 10 sessions of sociodrama, the patients showed a significant improvement in the BPRS total score, in the withdrawal-retardation and hostile-suspiciousness subscale scores and on the ToM Scale. There was also a significant improvement on the QoL Scale. There were no significant changes on the RCS or the Empowerment Scale. CONCLUSION: These results suggested that, for inpatients with schizophrenia, sociodrama can make a useful contribution in the improvement of withdrawal-retardation, hostile-suspiciousness, theory of mind, and subjective satisfaction with quality of life. We therefore expect that sociodrama can play a useful role in enhancing the psychosocial functioning of patients with schizophrenia. Future research to generalize of the results of this study is necessary.