her aim is to bring drugs studies closer to the public health in China. She is a member of the Chinese Expert Committee on the prevention and control of drug abuse. Her current works focus on: (i) estimating the effect of current policies on prevention and control on drug abuse as well as HIV, TB; (ii) modelling the epidemic of drug abuse, HIV and TB based on data rising from national surveillance and survey; and (iii) public health paradigm of prevention and control on drugs users.