The aim of present study was to investigate the effectiveness of self-regulation couple therapy on marital satisfaction, identity styles and family problem solving. For this purpose, in a quasi-experimental study, 20 couples referred to psychiatrists, neurologists and counselling centers in the city of Kashmar were selected by available sampling method and then randomly designed into tow experimental and control groups. The experimental group participated in 8 sessions of self-regulation couple therapy (Halford, 2004), while control group was not any treatment. The participants completed ENRICH Couple Scales (ECS), Objective Measure of Ego Identity Status (OMEIS-II) and Family Problem-Solving Questionnaire (FPS). Data were analyzed by SPSS20 software, using one way analysis of covariance (ANCOVA). The findings showed that self-regulation couple therapy increases the couple’s marital satisfaction and problem-solving skills. In addition, self-regulation couple therapy decreases the mean scores diffusion, foreclosure, moratorium identity styles. In contrast, this therapy increases the mean scores achievement identity style. In sum, result showed that self-regulation couple therapy might be an efficient way to improve marital satisfaction, and family problem solving. Also, couple therapists can use of self-regulation couple therapy for improving marital satisfaction, identity styles and family problem solving.