After laser surgery, there may be slight damage to the skin, usually after a period of time will recover, the main cause of non-healing wounds is usually due to infection of germs, you can help the healing through medication, daily care and other ways. 1. Medication: active anti-infection treatment is needed to avoid infection, which may cause delay in wound healing. Anti-infective drugs such as mupirocin ointment or erythromycin ointment can be used to prevent infection, or growth factor drugs can be used at the same time to promote healing. 2. Daily care: saline can be used to clean the wound 3 days after treatment, and then disinfect the wound with iodophor. Pay attention to the cleanliness and hygiene of the wound and sun protection. Drink more water and eat more high protein food. It is recommended to use medication under the guidance of a doctor and go to a regular hospital for laser treatment to reduce the risk of infection.