The most common side effects in the course of radiotherapy are skin and mucous membrane reactions, which are manifested as skin redness, pigmentation, even skin breakage, peeling, and in serious cases, ulcers and infections can occur; serious skin reactions are mainly seen in head and neck tumors: nasopharyngeal cancer, laryngeal cancer, hypopharyngeal cancer, esophageal cancer and individual breast cancer patients; in clinical work, doctors will reduce the skin dose (except for skin as the target area of treatment) to reduce such reactions as much as possible on the premise of guaranteeing the therapeutic dose. (except for skin as the target area of treatment) to reduce such reactions. However, due to the location of the tumor, tumor treatment dose and individual differences of patients, sometimes individual patients may have obvious skin reactions. In order to prevent serious skin reactions, patients need to focus on the following aspects: 1) Keep the radiation field as ventilated as possible, i.e., do not wrap or encase the skin in the radiation area as much as possible. 2) Keep the skin dry and fresh. 3) Do not use alcohol, soap, etc. to wash. 4) For the skin in the radiation area of the neck, wear low-necked, cotton clothing as soon as possible to minimize the friction. 5) Do not apply short-term hard-to-absorb drugs before radiotherapy because if such drugs are hard to absorb, they will be difficult to absorb and will not be absorbed by the patient. Because if this kind of drug is difficult to absorb, in the process of radiotherapy is equivalent to the skin surface to add a compensatory film, will lead to higher skin dose, aggravate skin damage; if there has been skin damage, no need to be overly nervous, in addition to the use of Western medicine, such as promoting epidermal growth factor external spray, lactic acid eschazialidin wet compresses, etc., Chinese medicine can be used to remove heat and detoxification and yin nourishing traditional Chinese medicines decoction, external, for example, can be consumed more Xiyangshen tea or water, and aloe vera flesh applied to the radiolucent wild skin. For serious skin reactions, such as ulcers and infections, radiotherapy should be stopped if necessary.