In recent years, the issue of adolescent mental health has become increasingly prominent. Among them, the phenomenon of adolescents refusal to go to school has moved from the margins to the public eye, becoming a family problem, educational challenge and social problem that needs urgent attention. For adolescents with school attendance problems, returning to school stably is not an easy task, and the process is full of hardships and challenges. This study takes the perspective of eyewitnesses and selects four cases who have experienced attendance difficulties and then successfully returned to school. The case study method in qualitative research is adopted. Semi-structured in-depth interviews are used to collect data. The data are analyzed by combining category analysis and context analysis. In order to deeply understand the process of the research subjects from school attendance difficulties to stable return to school, the influencing factors of the research subjects’ successful return to school and stabilization are analyzed. The results show that by tracing back the return to school process of adolescents with school attendance difficulties, it can be divided into the beginning period of refusal to school, the persistent period of refusal to school, the coping period of refusal to school, the turbulent return to school period and the stable return to school period. By tracing back the return to school process, the key factors that promote the successful return to school of adolescents with school attendance difficulties are identified, which provides valuable inspiration and reference for adolescents currently facing similar difficulties.