This study attempt to figure out causes of the injuries that are incurred during aerobic dancing program. For this purpose self-report questionnaires were administered to 330 male/female in three types of aerobic dancing class. Surface of aerobic dancing place, wear, shoe type, frequency, dancing time and career of aerobic dancing were answered. The most representative injured parts of body was knee(22.7%). And ankle(21.2%), waist, arm/shoulder(18.2%) were frequently injured. Cause of injury were excessive aerobic dancing (Overload, 45.2%), lack of flexibility (23.4%) and incorrect posture(21.8%). Instructors have to control reasonable aerobic dancing time and rest time for age. And stretching must performed before and after aerobic dancing program. It was suggested that clarify injury mechanism of aerobic dancing in the future research.