Post-traumatic stress disorder （PTSD） is one of the most serious mental disorders， and psychotherapy is a common treatment for PTSD. It has been proved that psychotherapy is very important for the improvement of PTSD symptoms， but there are few reports about the differences in the applicability and efficacy on various psychotherapy methods. This article reviews the domestic and international researches on the psychotherapy of PTSD， and elaborates the mechanism and indication of different psychotherapy methods.