Pain in the inner thigh after varicose vein surgery may be postoperative incision pain, deep vein thrombosis, etc. and needs to be treated accordingly. Postoperative incision pain, which is very common, often occurs within 1-2 days after surgery. If the postoperative incision pain is not accompanied by localized redness and swelling, non-steroidal anti-inflammatory drugs, such as ibuprofen or diclofenac sodium, can be used to relieve the pain, and the pain will usually be relieved in 3-5 days. Deep vein thrombosis of the lower limbs, leg pain with sudden edema of the lower limbs, this situation is sometimes the occurrence of deep vein thrombosis, so this situation must be carried out on the lower limbs of the venous ultrasound examination, in order to rule out or confirm the diagnosis of thrombosis. If the diagnosis of thrombosis is confirmed, anticoagulation should be given according to the principle of thrombosis treatment, usually using low molecular heparin sodium anticoagulation, and the patient should be instructed to lie down absolutely to avoid dislodging the thrombus.