The main reasons for a hole in a surgical wound not healing may be: deformed wound healing, lack of effective blood supply or due to local chronic inflammation. 1. Deformed wound healing: the outside of the mouth heals faster, while the inside heals slower, but sometimes if the tension of the outside of the mouth is relatively high, you need to slowly from the inside to the outside, gradually filling, which may lead to a hole in the wound can not be healed. 2. Lack of effective blood circulation supply: lack of effective blood circulation supply in the hole of the wound, mainly due to malnutrition, lack of exercise, wound tension, like to wear too tight clothes, but also after surgery there is a hole can not be good situation. 3. Local chronic inflammation: caused by the long-term presence of inflammatory factors, resulting in local chronic infection, there will be a hole in the wound after surgery can not be good. There may be other reasons why the surgical wound can not be healed, it is recommended to go to the hospital, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.