Basing on the questionnaire survey and interviews, this study took the national family planning special family in Zhangzhou as the research object to explore the operation mode of the community mental health service targeting the loss of only child families. There was a distinct depressive state in this group, and the social support and all dimensions were negatively correlated with depression. The study carried out the project?driven action research into “Loving Home and Rebuilding the Loss of Only Child Families”. The study maintained that perfecting management model, standardizing and promoting the professional team accordingly, comprehensive screening, meeting specific needs with an overall perspective were the best method to serve these families. Only in this way can we offer a systematic, dynamic and in?depth community mental service to the loss of only child families, to help them tackle difficult situations and eventually promote their mental health.