The purpose of this study is to explore the past drug dealing experience of males who were recovered from drug addiction and stopped drug dealing, examine the structural changes, strategies, and organizations of drug dealing, and provide basic data for a correction policy to help drug dealers’ addiction recovery and establish a drug supply reduction policy. The subjects of the study were five males who had more than seven-year experience of drug dealing and more than three-year recovery period. An in-depth one-on-one interview was conducted for data collecting. The data collected were analyzed using the case study methodology by Creswell(2013). This study was intended to analyze the dynamic process and results of phenomenon according to the flow of time of drug dealing and in particular understand the context. As a result, four analysis areas, 11 categories, and 39 concept clusters were derived. First, entry motivation included Midas business, a superspeed rise of social status, and poor person’s dream. Second, drug supply groups included building up a permanent supplier, a distrust and betrayal structure, and cash that is the root of trust. Third, strategies to expand a consumer market included targeting friends, a multi-level drug dealing group, and putting one into an infinite loop of addiction. Fourth, social relationship included putting on a mask of the ordinary and false voluntary service. Based on the results, this study discussed and suggested a correction policy to help drug dealer’s recovery through a supply reduction policy and a demand decrease policy to protect preliminary drug addicts and individuals who are in danger of drug addiction relapse from drug dealers.