Muscle damage can occur at the site irradiated by chest radiation therapy. Radiation therapy is commonly used in the treatment of malignant tumors, and the radiation produced during the treatment may stimulate the muscle nerves, thus causing muscle damage at the radiation site. Generally, after the completion of radiation therapy, under the guidance of professional doctors to take nutritional nerve, improve microcirculation drugs for treatment, such as methylcobalamin, vitamin B12, hemosiderophores, etc., muscle damage will gradually recover. If muscle damage occurs in the area irradiated by chest radiation therapy, it is recommended to cooperate with professional doctors for drug conditioning as soon as possible to promote the recovery of the damaged area. At the same time, we should pay attention to the supplementation of diet and nutrition, eat more food rich in minerals and proteins, appropriate sports and exercise, enhance physical fitness, improve immunity, radiation therapy will have a better effect.