1, the form of drug abuse is increasingly serious: the United Nations International Narcotics Control Programme in its 1997 annual report, the current world trade in drugs reached$ 500 billion a year, second only to the arms trade. The number of people involved in drug production or consumption has reached 10% of the world’s population, and is increasing at a rate of 3%-4% per year. Since the 1980s, the phenomenon of drug addiction has resurfaced in China, and the number of drug addicts has been rising year by year. By the end of October 2001, the number of drug addicts registered by the public security department reached 901,000, of which 745,000 were heroin addicts, while the actual number of drug addicts was tens of times higher. The phenomenon of drug trafficking is not only getting stronger, but is developing towards younger age, and in the past two years, the phenomenon of drug abuse and drug trafficking has started to invade secondary schools, and the number of drug addicted students in schools is obviously on the rise. Drug addiction not only makes people spiritually degenerate, physically decaying, prompting the spread of HIV, and is an important factor in social and family instability, has become a serious social problem. 2, the characteristics and nature of drug abuse: once you try to abuse drugs may become addicted, once addiction is difficult to completely withdrawal cure, the recent relapse rate of up to 95% or more. This determines the importance of prevention in the prevention and treatment of drug abuse. 3, prevention is more important than treatment: from the perspective of health care, drawing on the prevention and treatment model of diseases (especially infectious diseases), the prevention is more important than treatment is also applicable to drug abuse.