INTRODUCTION: This study examined the effectiveness of occupational performance coaching, which was delivered through telerehabilitation, in improving children with autism spectrum disorders (ASD) occupational performance, behavior problems, and prosocial behavior in addition to parental self-efficacy and quality of life. METHOD: Forty-three children were matched and randomized to occupational performance coaching or waitlist groups. Occupational performance, parental self-efficacy, behavioral problems, and prosocial behaviors were assessed using the Canadian Occupational Performance Measure, Child adjustment and parent efficacy scale-developmental disability (CAPES-DD), the Short-Form Health Survey, and goal attainment scale. RESULTS: The intervention group showed greater improvement on occupational performance, specified goals, and behavioral problems. No progress was seen on the CAPES-DD prosocial behavior subscale. In addition, parental quality of life improvement was not maintained after the follow-up phase. CONCLUSION: Occupation performance coaching, which was delivered through telerehabilitation, was effective on children with ASD occupational performance and parental self-efficacy, but it was not effective on the prosocial behaviors of these children.