“National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention” was officially established in July 1998 when called as “National Center for HIV/AIDS Prevention and Control, Ministry of Health” which was affiliated to Chinese Academy of Preventive Medicine, as a professional institution for HIV/AIDS prevention and control approved by the State Council. On 23rd January 2002, the “National Center for HIV/AIDS Prevention and Control, Ministry of Health” was renamed as the “National Center for AIDS/STD Control and Prevention”, which is abbreviated to NCAIDS/STD, a unit is subordinate to the “Chinese Center for Disease Control and Prevention”, after the “Chinese Academy of Preventive Medicine” was renamed as the “Chinese Center for Disease Control and Prevention”.