The number of injuries caused by accidents while springing on a trampoline has increased significantly. This study therefore focused on the incidence, morbidity and circumstances of the accidents in pediatric patients. The children admitted to this hospital from 2002 to 2010 were re-examined and the children injured during trampolining were asked to fill out a questionnaire focusing on the mechanism of the injury and the circumstances. A total of 268 accidents were included in the study and 28% of the injuries were severe (e.g. fracture, luxation and rupture). If there were special safety measures (e.g. safety net, floor mats, surrounding water 63%) 28.4% of the injuries were severe and without safety measures 28.6% were severe. Safety measures did not influence the incidence of severe trauma (p=1). If a trampoline was equipped with a safety net (53%) 31% of the injuries were severe and without a safety net 25% were severe (p=0.473). Pediatric accidents on a trampoline result in severe injuries in 28% of cases. There is no difference in the severity of the injury regarding trampolines with or without special safety measures. Safety nets do not reduce the risk of severe injury.