In the process of seeking intervention methods for adolescents who refused to study, the author found that one adolescent who refused to study successfully returned to school and restored social function with the help of A’s companion. This article aims to discuss the practical effects and application value of companionship models in response to adolescent school refusal, and to test the generalizability, in order to help more adolescents who refuse to study get on the right track in life. This study adopts a qualitative oriented case study method to conduct in-depth and specific research on the participants, collect data through semi-structured in-depth interviews and observation methods, and analyze the data using MAXQDA software. The research content has obtained informed consent from the study participants and has undergone ethical review by the school. The research results found that companionship can lead teenagers who have taken a break from school to establish new connections with others, leave their homes, restore social function, increase the probability of returning to school, and the trend of companionship effect shows a nearly inverted U-shaped curve. The companionship mode can be achieved through practical testing. However, to increase the generalizability of this method, it is necessary to establish a more comprehensive companion mechanism. This study preliminarily explores the practical effects and application value of the companionship model in response to adolescent school refusal, and summarizes the role positioning, competency trait model, precautions and potential risks in the companionship process of the accompanying volunteers, providing reference for the promotion of the companionship model.