Varicose veins are still swollen and painful more than 3 months after surgery, it may be due to incomplete surgical treatment or postoperative infection, which needs to be selected in accordance with the patient’s condition. 1. Incomplete surgical treatment: When the patient’s condition is more serious, varicose vein surgery may be incomplete, and the patient will experience swelling and pain after surgery. These patients are recommended to be treated with medications such as aspirin enteric-coated tablets. This is due to the obstruction of venous blood return after surgery, which leads to the formation of deep vein thrombosis, which is treated with anticoagulant drugs such as aspirin enteric-coated tablets. 2. Postoperative infection: Varicose vein surgery will have certain trauma, when the patient does not pay attention to care after surgery, it is easy to cause postoperative infection, there will be swelling and pain, high fever and other symptoms. It is recommended that these patients take cefixime granules, amoxicillin capsules and other medications as prescribed by the doctor. If the medication can not relieve the symptoms of swelling and pain, or the condition worsens, it is recommended to go to a regular hospital as soon as possible, after a clear diagnosis to take targeted treatment, do not treat yourself, so as not to cause adverse consequences.