Lower extremity venous thrombosis has a high probability of recurrence after 7 years. Patients are advised to go to local hospitals for regular follow-ups, and if they experience leg swelling and pain, they need to consult a doctor as soon as possible to prevent the condition from developing and affecting the treatment effect. Lower extremity venous thrombosis is mainly caused by venous valve insufficiency and hypercoagulable state of blood, etc. Conventional anticoagulant therapy, thrombolytic therapy and surgical treatment can effectively alleviate the symptoms, but it cannot be completely cured, and the probability of recurrence is higher if the causative factors are not eliminated. Patients can use anticoagulant drugs and wear compression stockings to promote venous blood circulation and reduce the chance of recurrence. In daily life, patients should also pay attention to strictly follow the doctor’s prescription of medication, appropriate exercise, and regular re-examination to prevent recurrence of venous thrombosis in the lower limbs.