Anticoagulation in the perioperative period of varicose veins, it has been reported in the literature that the occurrence of thrombosis after varicose vein surgery seems to be less related to whether anticoagulation is present or not, and more related to whether early bed activity is present or not, however, this does not mean that anticoagulation is not needed for varicose vein surgery. 1, whether the patient has thrombotic risk factors, such as obesity, tumor, renal disease, rheumatologic immune disease, previous thrombotic disease, etc.; patients can be evaluated for thromboembolic risk, as long as they are located in intermediate risk or higher risk should be postoperative anticoagulation. 2. The risk of postoperative thrombosis is increased in superficial thrombophlebitis complicated by thrombophlebitis. Superficial vein thrombosis and DVT have common risk factors, and female patients are about two times more likely than male. The current development of SVT into DVT and even PE is often underestimated. 3, The risk of thrombosis in both lower extremities with simultaneous surgery is significantly increased and should be routinely anticoagulated. 4, combined with iliac vein entrapment is the risk of independent thrombosis, which should be treated first and routinely anticoagulated after surgery. 5, Those with elevated preoperative D-dimer and exclude other diseases that cause elevated D-dimer should be cautious, with anticoagulation in place and dynamic detection of D-dimer levels. 6.As mentioned above, early bed activity has a preventive effect on thrombosis, so the postoperative period should be based on the degree of recovery of the patient’s activity, and if the patient is poorly mobile, he should also be anticoagulated until after good voluntary activity. Therefore, postoperative anticoagulation in the saphenous vein is recommended as an individualized countermeasure with selective anticoagulation.