Peer support refers to emotional,appraisal,informational support provided by social networking partners with empirical knowledge and similar personalities to address the health problems of a population. As a part of social support,peer support has been applied in adults with chronic diseases. This article reviews the research progress on peer support for parents of premature infants,focusing on its content,modalities,and the challenges and difficulties in program development and implementation. Based on the current status,we raised the recommendations of improving parents’ access to peer support and avoiding potential psychological harm to parents. The results of this review could provide a reference for further research and practice on peer support for parents of premature infants in China.