Objective To understand the status of HIV infection and syphilis and related behaviors among female sex workers(FSMs)in Xichang City of Sichuang Province,2010-2015.Methods Three consecutive cross-sectional surveys were conducted to investigate the characteristics of social demography and behaviors and to detect the HIV infection and syphilis among FSM population from 2010-2011,2012-2013 and 2014-2015 respectively.ResultsThe numbers of FSMs in the three surveys were 805,806 and 800,respectively.During the pe...