Background: Exploring why the national drug policy failed is an important issue. Although the theory of "Imaginary Penalty" points out the relationship between ideology and policy-making, it ignores the systemic nature of drug control and the voice of drug addicts. Methods: This study takes substance abusers who live in urban communities as the research participants. Using qualitative research data, this study explores how individual drug abuse experiences are identified and classified by structural forces and how individuals manage their daily life. Results: The study finds that law enforcement agencies (Narcotics Control Office (NCO), Police Station , and Community Assistance Group (CAG)) have different attitudes toward Substance abusers and generate different managements, forming multiple governance models, and then shaping the multiple and incomplete Substance abusers’ identity dilemma. Drug addicts perceive the dilemma, and they adopt the strategies of spatial isolation (hidden flow), disconnection from experience (temporal isolation), and instrumental cooperation to continuously re-adjust and achieve identity recovery from the bottom up with the "possible citizens" narrative logic. Conclusion/importance: Through evaluating the effectiveness of self-management strategies, this research integrates the Chinese drug rehabilitation situation, expands the specific performance of "Imaginary Penalty" in the law enforcement system, and presents the limitations and positive value of self-management strategies.