Objective To probe into the effect of comprehensive nursing in forming postoperative deep vein thrombosis（DVT）of digestive tract tumor.Method 115cases of patients with digestive tract tumor received in our hospital from september 2009to April 2012were chosen and randomly divided into experimental group with 57cases and control group with 58cases.Patients in the control group were given routine nursing while those in the experimental group received comprehensive nursing such as psychological nursing

health publicity and education

dietary nursing

exercise instruction and drug prevention.Incidence rate of DVT in the two groups was evaluated and compared.Results Incidence rate of DVT in the control group was 19.8% while that of the experimental group was 5.2%

and the differences were statistically significant（p<0.01）.Conclusion Comprehensive nursing plays a significant role in preventing postoperative DVT

which is worth promoting.