Numbness of the wound after one week of chin pad surgery can be caused by normal sensation of incision recovery, wound infection, nerve damage and so on. 1. Normal recovery process: numbness around the wound after surgery, abnormal sensation is more common, because the incision will lead to damage to the cutaneous nerve that controls the skin sensation, with the gradual recovery of the wound, the abnormal sensation will disappear on its own. 2. Wound infection: If the numbness around the wound is accompanied by obvious redness, swelling and pain, it is likely that the wound is infected. You should consult the doctor immediately and take amoxicillin, cefuroxime and other anti-inflammatory drugs as prescribed by the doctor to avoid further aggravation of the infection. 3. Nerve damage: If the nerve damage is caused by surgery, it will lead to numbness around the wound, abnormal sensation, and muscle weakness. If the situation is serious, we should consult the doctor in time to clarify the cause of the disease and then carry out targeted treatment.