Numbness of the wound should be considered as a symptom caused by local nerve damage. Nerve recovery usually takes at least three months, so the numbness of the wound may last for a relatively long time. Recovery needs a gradual process, and the specific recovery time is also related to a variety of factors, such as whether the local infection, local blood circulation, diet and nutrition and so on. Therefore, first of all, we should pay attention to keep the local clean and hygienic, you can often use iodine povidone to prevent infection, you can also often do a local massage to promote blood circulation, improve the local blood supply, you can also strengthen the nutrition of the diet, eat more protein and vitamin C-rich food, which will help the healing of the incision, but also can eat more vitamin B-rich food, such as bananas, carrots, etc., which will help the nerve repair. It also helps to repair the nerves.