Ingrown nails are a common and frequent problem in surgical clinics. It is generally believed that its onset is related to the abnormal development of the finger (toe) nail, resulting in changes in the normal position of the finger (toe) nail and nail groove. The clinical manifestations are redness, swelling, pain and granulation of the lateral nail fold, sometimes with purulent secretions, and in severe cases it can spread to form a subxiphoid abscess, which is very painful and persistent. The traditional surgical treatment is a simple surgery – nail extraction. Because of the anatomical structure of the nail, the recurrence rate of nail extraction is high. This method cannot achieve the purpose of radical treatment, and it not only causes damage to the toenail, but also can cause further deformation of the toenail, which is not conducive to further treatment. The main points of this operation are to pay attention to the surgical incision, to remove part of the toenail and the nail bed and the growth layer, to pay attention to the nail ratio, to separate the edge of the nail bed along the surface of the finger (toe) bone, and to remove the residual nail bed and the growth layer by scratching the toe bone with a bone scraper after the separation. After surgery, disinfect with iodine, bandage the wound, put a tourniquet on it, and let the patient lie flat for 15-30 min to prevent bleeding from the wound. Painkillers were given the night after the operation, antibiotics were given for 1 week after the operation, daily dressing changes were required for wounds with oozing, and the wounds were removed in 10 days. According to the statistics, the recurrence rate of this procedure is at 6%.