This study aims to investigate the mechanism of relapse tendency in male drug abusers and provide empirical evidence for reducing relapse tendency of drug abusers. A survey was conducted on 310 male individuals with drug addiction using Chinese Perceived Stress Scale (CPSS), Simple Coping Style Questionnaire (SCSQ), the Regulatory Emotional Self-Efficacy Scale, and the Relapse Tendency Scale (RTS). (1) Stress is significantly positively correlated with the relapse tendency of individuals with drug addiction; (2) Stress indirectly affects relapse tendency through regulatory emotional self-efficacy; (3) Regulatory emotional self-efficacy can directly and negatively predict relapse tendency, and can also indirectly and negatively predict relapse tendency through coping style. Stress coping theory, tension elimination theory, and the self-administration hypothesis are applicable to explain the tendency to relapse due to stress among compulsory isolated drug abusers in China; Regulatory emotional self-efficacy and coping style play a chain mediating role between stress and relapse tendency of male individuals with drug addiction.