Abstract: Objective:To explore the effects of electronic simplified Caprini risk assessment in the prevention of deep venous thrombosis(DVT) in ICU patients.Methods:According to the Chinese medical association thromboembolic disease prevention and control committee suggestion and ACCP-9(American College of Chest Physicians) guideline,the electronic bleeding risk assessment table and electronic simplified Caprini risk assessment table were designed and applied in the hospital electronic medical records information system.Fifty patients in ICU from September 2014 to June 2015 were assessed using the electronic bleeding risk assessment table and electronic simplified Caprini risk assessment table,and the DVT was prevented according to the assessment results.The DVT prevention data of 50 ICU patients without assessment from September 2013 to Septenber 2014 were retrospectively analyzed.Results:The prevention rate of DVT in ICU critical patients assessed by electronic simplified Caprini risk assessment was 100%,the physical prevention rate increased from 20% to 76%,the prevention rate of drug was similar to the combination prevention,and the difference of the prevention rate of DVT between assessment group and non-assessment group was statistically significant(P<0.01).Two cases in 50 cases before assessment died suddenly,and none in 50 cases after assessment died suddenly.Conclusions:The electronic simplified Caprini risk assessment based on evidence can increase the prevention rate of DVT in ICU patients,the quality of which still need to be continuously improved to improve the quality of medical care.