PURPOSE: Cheerleading is introduced to Korea in recent years and the popularity is growing fast. No study has reported the prevalence of cheerleading related injuries in Korea. This study describes the rate and types of injury and aftercare related to cheerleading of Korean teenagers. METHODS: Data are collected from the registered cheerleaders using a cheerleading injury surveillance questionnaire. A total of 345 teenage athletes of 42 teams who participated in Korea Cheerleading Club Festival sponsored by Korea Cheerleading Association responded to the questionnaire. From the questionnaire, their demographic information, the training history, injury incidence and types (multiple choice), and recovery process were reported. RESULTS: Injury experienced teenager was 189 (IG; 54.8%, 14.9±2.9 yrs, 158.6±10.5 cm, 48.9±11.4 kg), and their physical characteristics were not different from injury non-experienced teenager (n=156, 45.2%). In IG, training period of less than 6, 6-12, 13-24, and 25-36 months was 21.8, 45.8, 24.6, and 7.8%, respectively. The most frequent injury site was in the order of wrist (38.6%), knee (34.1%), ankle (32.3%), shoulder (30.2%), waist (24.6%), face (13.9%), and neck (12.2%). Frequently reported Injury type was contusion (44.7%), muscular pain (42.4%), ligament (20.2%), sprain (19.0), abrasion (12.3%), and back pain (11.1%). Movements causing injury were Cradle (16.8%), Elevator (15.1%), Pyramid (11.8%), Extension (10.1%), Basket toss (9.0%), Practice (8.5%), and Handspring (6.8%). When experienced injuries, they went hospital with coaches (41.9%), visited clinic without a coach (25.7%), treated privately (19.0%), and did not care (6.7%). For treatment of injury, they were rehabilitated at a hospital (26.3%). Many of the injured cheerleaders (41.9%) did not practice rehabilitation or took care of themselves (19.0%). When returning to training after injury, they were fully (49.7%) or partially recovered (44.7%). CONCLUSIONS: More than half of the teenage cheerleaders experienced injuries and more than half of them did not practice proper rehabilitation. More than half of injured cheerleaders returned to training without a complete recovery. Safety and injury prevention measures and education for rehabilitation should be introduced to Korean teenage cheerleaders.