It is necessary to wash the burn with cold water immediately. It can reduce the local temperature and prevent further aggravation of the burn. It is recommended that the liquid in the blister be pumped out, and aseptic operation must be carried out. Generally, iodophor is used for disinfection, and then the liquid in the blister is pumped out with a sterile syringe. The blister skin should be retained. The blister skin can play a role of isolation, prevent external pollutants from entering the face, and effectively prevent infection. Once infection occurs, local redness and swelling, or even pus, will affect the healing. With the recovery of the disease, the blister skin will gradually fall off, and can be externally treated with drugs, such as MEBO, Kangfuxin Liquid, etc., to promote the wound healing. The above scheme is only for reference. Please use the specific drugs under the guidance of professional doctors according to your own conditions.