目的　探讨我国静脉吸毒人群前瞻性研究队列按约定日期随访的方法。方法　 2 0 0 2 - 11在四川省凉山州社区中招募了HIV抗体阴性静脉吸毒人群前瞻性研究队列 333人 ,于第 12个月随访期间 ,分阶段抽取 133名随访的研究对象进行调查 ,分析与研究对象按约定日期随访相关的社会人口学和队列保持方法等影响因素。结果　调查的 133名研究对象按约定日期随访率为 6 0 2 % (80 / 133) ,其多因素Logistic回归模型分析有统计学意义 (P <0 0 5 )的变量是住处距门诊点距离、种子通知、 6个月回访和愿意继续参加项目。结论　通过种子帮助外勤组联系参加者是吸毒人群研究队列重要的随访方法之一 ,同时随访过程中应尽力寻找住处距离门诊点较远或曾有失访史的参加者 Objective To investigate the prospective study cohorts of intravenous drug users in China following the agreed date. Methods A total of 333 prospective cohorts of HIV-negative intravenous drug users were enrolled in the community of Liangshan Prefecture in Sichuan Province from February 2000 to November 2011. During the 12th month follow-up period, 133 follow-up study subjects were investigated and analyzed Factors influencing socio-demographic and cohort maintenance methods related to the target date follow-up. Results The follow-up rate of 133 subjects was 62.0% (80/133) according to the agreed date. The multivariate Logistic regression model was used to analyze the statistically significant (P <0.05) Seed notification, 6 months return visit and willingness to continue participating in the project. CONCLUSIONS The participation of members of the Field Service Group through seed is one of the important follow-up methods for drug abusers in the cohort of research and at the same time endeavors to find participants whose residences are far from outpatient sites or who have lost a previous visit