This study will rely on the training course of CTCT project to conduct standardized training for trauma practitioners in China. And the quality of training will be stratified research; Continuously improve the quality of trauma treatment and improve the prognosis of trauma patients.

All CTCT participants from different administrative districts of China registered for standardized and procedural CTCT curriculum . All trainees have finished the general survey of personal background, trauma care status in local hospitals and pre-training tests of trauma knowledge. After CTCT curriculum and hifidelity trauma simulation training, they were also needed to finish post-training test about the initial evaluation of various kinds of traumas. The pre- and post-training examination were constantly about trauma evaluation of major trauma patients.

Inclusion criteria: Trainees who attended on CTCT curriculum. Exclusion criteria: Rejection for supplying training information, in-completed CTCT training information, lack of pre- and/or post-training scores.