In order to reduce the social and personal harm caused by drugs, it is urgent to strengthen the ability of the primary health institutions in screening and intervention the addictive substances use. Firstly, the investigators will invite 10 primary medical staffs and 10 experts in addition to revise the manual of Alcohol, Smoking, and Substance Use Involvement Screening Test (ASSIST) and Brief Intervention (BI). Then, the investigators will recruit 100 medical staffs to participate the training of ASSIST and BI. Secondly, the researcher will investigate the effects of BI technology in reducing the use of addictive substances, improve the addiction related knowledge of patients through randomized controlled study. Finally, the investigators will collect the research information, revise the manual, and promote the training.