Abstract: How to guide and help young lying flat people to move forward is an important topic of concern from all walks of life. Through the observation and semi-structured in-depth interview on the online activities of members of the Douban “Lying flat and Standing up Mutual Aid Alliance”, the paper focuses on the reasons, assistance of the rehabilitation of young lying flat people, and presents the practical strategies and subjective experience of their rehabilitation. The research points out that there are two basic trigger mechanisms for young people to lie flat, namely “frustration-lying flat” and “stress-lying flat”. The study finds that the improvement of physical and mental state, the stress of real life, the inner anxiety and self blame, and the fear of social disjunction are the important reasons for the lying flat youth to stand up. Social support is an important help for the lying flat youth to stand up. Not only do traditional social networks provide objective and subjective support for lying flat youth, but also peer groups based on the Internet provide important support such as supervision and empathy for lying flat youth. The standing up youths suggest that those lying flat should actively seek social support and improve the utilization of social support, and find the right goal and rhythm for standing up.