After being scalded by hot gas, the affected area should first be cooled down, and then disinfected and medicated. 1. Cooling treatment: after being scalded by hot gas, the patient’s local skin will be in a state of high temperature, the patient should use flowing cold water to continuously flush the affected area, so that the scalded skin area can be effectively cooled down, to avoid aggravation of the scalded situation. 2. Disinfection: After the scalded blisters, don’t poke the blisters, you can disinfect the affected area by applying povidone-iodine. If the blister is serious, you should go to the hospital and have the doctor burst the blister and then disinfect it. 3. Apply drugs: when the blisters burst, the patient can be under the guidance of the doctor to use the raw muscle cream, erythromycin ointment and other drugs on the affected area to apply treatment, to avoid the occurrence of infection and inflammation. When the burns are serious, you should go to the hospital for treatment in time to avoid delaying the condition.