Postpartum depression is a disease which can threaten the life of mothers and babies in perinatal period. Mindfulness is an exercise helpful for mental health. The aim of this study is to perform a systemic review to summarize the effects of mindfulness on postpartum depression. We search for papers focus on studying the effects of mindfulness on postpartum depression since 2009 which published in English or Chinese. We search papers form databases of Medline Complete and AiritiLibray. We retrieval seven papers included in our study, the results demonstrate that mindfulness can effectively improve the symptoms of postpartum depression. Based on the review, promotion mindfulness-based regiment can improve the quality of maternal mental care.