目的　通过对浙江省吸毒人群行为学特征调查 ,了解HIV感染水平 ,分析HIV相关危险因素。方法　确定 1999年 10月～ 12月期间浙江省市、地级公安局强制戒毒所和乐清市公安局强制戒毒所内所有戒毒人员共 1712人作为本次调查对象。设计统一调查表 ,采用匿名自填方式 ,同时采静脉血检测HIV抗体。结果　吸毒人群以未婚男性青年为主 ,文化程度相对较低 ,无业人员和个体户居多 ,流动人口占有相当比例。毒品种类以海络因为主 ,吸毒方式以吸食为主 ,注射吸毒仅占总人数的 2 7 8% ,吸毒人群HIV抗体阳性率为0 5 % ,感染者均为外省流动人口。结论　加大对引诱他人吸毒的处罚力度 ,阻止吸毒方式改变、减少共用注射器行为发生 ,是保持吸毒人群HIV低感染率的有效手段 Objective To investigate the behavioral characteristics of drug addicts in Zhejiang Province to understand the level of HIV infection and to analyze the risk factors associated with HIV. Methods A total of 1712 people from all compulsory drug treatment centers in compulsory drug treatment centers in Zhejiang Province, prefectural-level public security bureau and Yueqing Public Security Bureau during October-December 1999 were selected as the subject of this survey. Design a unified questionnaire, using anonymous self-filling, while collecting venous blood test HIV antibody. Results The majority of drug addicts were mainly unmarried young men, with a relatively low level of education. Most unemployed and self-employed households accounted for a substantial proportion of the floating population. The main types of drugs to the network because of drug abuse, mainly to take the drug abuse, injecting drug only accounted for 28.8% of the total number of HIV-infected drug users, the positive rate of 0 5%, all infected persons are migrants from other provinces. Conclusion Increasing the penalties for inducing drug abuse by others, preventing changes in drug use patterns and reducing the incidence of common syringes is an effective means of keeping HIV low among HIV-infected people