Radiation dermatitis is one of the common side effects of radiation therapy for tumor patients. In the middle and late stages of receiving radiation therapy, most patients will suffer different degrees of damage to the irradiated field skin, and the common clinical manifestations are: erythema, hyperpigmentation, scratching, desquamation, erosion and ulceration. Therefore, it is especially important to take good care of the skin during the treatment. 1, irradiated field skin do not use alkaline solution to clean, use warm water can be, prohibit tape, shaving (shaving) hair. 2, avoid rough, too tight clothing friction, should wear loose low-neck texture of soft clothing. Such as: cotton, silk clothing. 3, avoid wind or sun exposure to irradiated wild skin, especially in summer should be out with an umbrella to cover the cool. 4, irradiated field skin forbidden to apply irritating items, especially metal-containing drugs such as universal oil, red mercury and cosmetics containing lead, etc. 5, the treatment process needs to keep the irradiated field skin dry, clean, prohibited cold, hot compress, and need to keep the radiation field markings clear. 6.If skin flushing and itching occurs, use ice chips and talcum powder for external application, do not scratch or apply other drugs privately, consult your health care provider if necessary. 7.Do not tear off the flaking, peeling or scabbing of the skin by yourself, so as not to cause skin tearing and infection. When turning the neck, be gentle and do not make big movements. At this time, you can use part of the topical drugs (such as Visque or Jinin Peptide, etc.) to spray as instructed. 8, such as skin erosion, ulcers need to suspend radiation therapy, anti-inflammatory, local use of drugs and other symptomatic treatment. Consider whether to continue radiotherapy after the skin improves. 9.Patients should eat more high-protein and high-vitamin food to increase nutrition to promote the repair of skin mucosa.