Depending on the condition of the wound after scabbing, if there is infection (or tendency to infection), dressing change is needed, if there is no infection, dressing change may not be needed. 1. Infection: If there is redness, swelling, heat, pain, or inflammatory secretion oozing out from around the scabbed wound, it is necessary to consider the existence of infection under the scab. After moistening/soaking with saline, the surface scab should be cut open or removed, and then cleaned with hydrogen peroxide, saline, and finally sterilized with iodine povidone, and antibiotic ointment (e.g., mupirocin ointment, etc.) should also be used to apply to the affected area. In this case, you need to change the dressing daily until the infection is eliminated, and at the same time, you can take amoxicillin, cefaclor and other antibiotics to treat the infection. 2. No infection: the wound has been scabbed, and there is no local redness, swelling, heat, pain and other symptoms of infection, and no oozing, indicating that the affected area is well recovered, no infection under the scab, this time you need to pay attention to the cleanliness of the affected area, to keep it dry can be, can not change the medicine. However, in order to protect the wound, the wound can be bandaged to protect, regular review. Drugs should be applied under the guidance of a doctor.