The reasons for pain below the incision of appendicitis surgery include the following: 1. It may be due to normal postoperative pain. Since the surgery is to make an incision at the point of McKay, which causes certain damage to the local muscles, tendon membrane and fat, it is normal to have postoperative incision pain. For mild pain can be observed symptomatic treatment, for more serious pain can also consider the application of pain medication for pain treatment. 2, may be due to the incision infection, patients appear under the incision pain, swelling, and even redness, swelling, fever, the incision should actively take suture removal, conducive to the incision below the exudate or infection lesions for removal, regular replacement of the incision dressing will be able to reduce the pain. 3, may be due to the incision infection. The pain may be caused by local adhesions in the abdominal cavity after appendectomy, but the pain will gradually improve with the passage of time and recovery.