1.Continue to take oral warfarin anticoagulation therapy for at least three months, and review the coagulation function regularly during the period, and upload the results or inform the attending doctor by phone to determine whether to adjust the warfarin dose and review period depending on the results. 2. Pay attention to bleeding gums, red urine, blue skin and other signs of bleeding, if they occur, review the coagulation function at the local hospital as soon as possible and adjust the anticoagulation treatment plan. 3, moderate exercise, work and rest, swelling and discomfort of the lower limbs after exertion, rest and moderate elevation of the lower limbs to promote blood flow back. 4. During the follow-up period, if you have any special discomfort, you need to come to the hospital to check.