This study investigates risk-taking behavior and its associated factors among young Hong Kong partygoers at rave parties or discos. Based on a survey of 300 14 to 28-year-old dance partygoers recruited by outreaching social workers, the study provides data on risks in terms of the likelihood of drug abuse, coitus, unprotected coitus, fighting, and high-speed driving among the young people. Furthermore, it examines factors related to the dance party, together with a set of background factors on the partygoer's report of the chance of engaging in risky behavior as expected in the coming six months. Factors related to the dance party include the location (Hong Kong and Mainland China), fees, number of partners, dancers, police inspection, drug supply, drug sales, injuries, coitus, fighting, drug abuse, and environmental factors. The environmental factors are the availability of first aid, fire extinguishing, and drinking water facilities, light and audio effects, ventilation, drug circulation, underage admission, sex partners, fighting, and low-price beer. Implications of present findings for social policy and future research are discussed. (Contains 4 tables.)