Objective To analyze the causes of deep venous thrombosis (DVT) of lower extremities.

Conclusion Malignant tumor and surgery, especially gynecological operations, trauma and fracture, and hospitalization are the main risk factors of DVT.

Analyzed 7 cases of deep vein thrombosis of lower limb in post uterine-incision delivery women by the review method to approaching the main reasons, and set up the nursing countermeasures.