To prevent and avoid serious skin reactions during radiotherapy, patients should pay attention to the following points: 1. avoid washing and rubbing the skin with soap; 2. avoid strong sunlight to reduce skin irritation; 3. avoid applying creams and other cosmetic preparations; 4. avoid scratching with nails to avoid skin damage if skin itching or other symptoms occur during treatment; 5, Avoid the pressure and binding of clothing on the irradiated area, reduce the friction of rough clothing, and wear cotton clothing as much as possible; 6. If the skin of the treated area has wounds that have not healed, the competent physician should be asked to decide whether to continue the treatment; 7. Wait until the wet flaking skin reaction improves before deciding whether to continue radiation therapy.