To analyze the perioperative clinical characteristics of patients with blunt abdominal trauma and open trauma，and to compare the differences during the clinical treatment process.

A retrospective analysis method was used to collect clinical data of 87 patients with abdominal trauma between January 2011 and December 2017. Patients were divided into blunt trauma group（n=41 cases）and open trauma group（n=46 cases）according to whether there were open abdominal wounds. Statistical software SPSS26.0 was used for data analysis. Measurement data of normal distribution was expressed as（

Among the injury factors，the main cause of injury in the blunt group was car accident injury，accounting for 46.3%，and the main cause of injury in the open group was knife stabbing，accounting for 56.5%. Multiple injuries were 58.5% in the blunt group and 23.9% in the open group，respectively. Compared with the open group，the ratio of neutrophils to lymphocytes before operation（3.31 vs. 2.35），hospitalization time（12 d vs.9 d），intraoperative blood loss（650 ml vs. 400 ml），and grade Ⅱ wound healing（34 cases vs. 28 cases），intraoperative blood transfusion（38 cases vs. 33 cases），intestinal-abdominal wall fistula（25 cases vs. 37 cases），postoperative complications ≤grade Ⅱ（23 cases vs. 36 cases），the differences were statistically significant（P<0.05）.

Blunt abdominal trauma and open trauma have different clinical characteristics. In general，patients with blunt trauma are more severely injury，difficult to surgery，more serious postoperative complications，and more complicated during perioperative management. The diagnosis and treatment strategy of blunt trauma should be prepared differently.