Two months after wound healing, the surrounding redness, swelling and pain on pressure are mostly considered to be caused by wound infection and allergic reaction. It is recommended that the wound should be cleaned twice and anti-allergy treatment should be given according to the cause of the wound. 1. Wound infection: it is mostly caused by incomplete disinfection of the wound and bacterial invasion of the wound. Generally, it is recommended to open the wound for the second time, remove the infected tissues, drain the fluid thoroughly, and combine with the routine postoperative dressing change and application of cephalosporin antibiotics such as cefuroxime for anti-inflammatory and anti-infective treatment. 2. Allergic reaction: when the patient’s wound has an allergic reaction, it can also be manifested as local redness, swelling, pain and other symptoms. It is generally recommended to look for allergens as soon as possible, using sterile gauze local bandage, oral loratadine and other anti-allergy drugs to reduce allergic reactions and improve the discomfort. Specific medication recommendations patients should be used under the guidance of a doctor.