Objective To analyze the injury features of the wounded in the bullet train crash in July 23,2011 in Wenzhou of Zhejiang and explore treatment experience.Methods A total of 177 cases who were injured or died in the 7.23 Wenzhou bullet train crash were involved in the study.The age,gender,injury types,injury regions and injury severity were analyzed by using Trauma Database System V3.0 ( produced by China Trauma Data Center of Third Military Medical University). Results A total of 137 cases were admitted to our hospital within 24 hours after the bullet train crash in Wenzhou.There were 76 males and 61 females,with no significant difference.Of the 137 cases,136 survived and one died after medical treatment.The major injury types included impact injury,crush injury and heavy weight falling injury.Among the 136 survivors,108 cases were with multiple injuries,accounting for 79.4％.The most common injury region of the survivors was the chest,followed by the head and limb.The minimum trauma index (TI) was 5 points and the maximum 27 points.There were 4 cases(3.7％ )with TI ≤9 points,86 (79.6％) with 10-16 points and 18 (16.7％) with ≥ 17 points.Of all,78 cases (72.2％) had ISS score ＜ 16 points and 30 (27.8％) had ≥16 points.The minimum ISS was 3 points and maximum 75 points.There were 40 deaths including the one died after medical treatment,who were all with multiple injuries,with head injury the main cause.ConclusionsThe causes of the bullet train crashes are complicated,with high incidence of multiple injuries.The injury severity is varied,but the overall situation is not serious.Distribution of common injury regions is significantly different between the wounded and the dead.Injury triage,patient transfer and specialist treatment of the wounded should be carried out appropriately during the initial stage of medical rescue based on those injury features after the bullet train crashes.