Radiotherapy is the main treatment for patients with nasopharyngeal cancer, however, radiotherapy has certain toxic side effects, and we need to pay attention to after radiotherapy: After radiotherapy, the diet is tasteless or odorless and oral mucous membrane reaction, patients should be encouraged to eat, so as to have a small amount of multiple meals. And give high protein, high vitamin, low fat, easy to digest food. Such as beans, milk, fungus, carrots, etc. Tell the patient to stop smoking and drinking, avoid cold and hard food, spicy and moldy food, and try to achieve balanced nutrition. If bleeding occurs, stop rinsing and apply pressure to stop bleeding, if necessary, use 1% ephedrine nasal drops to constrict blood vessels and give vitamin C and K orally. After radical radiotherapy for nasopharyngeal cancer, salivary glands (including parotid gland, submandibular gland, sublingual gland and small salivary glands of oral oropharynx) are damaged to different degrees, so that saliva secretion is reduced and becomes sticky, which makes the original rinsing and sterilizing effect of oral cavity weakened, so you should rinse your mouth or brush your teeth in time after meals to maintain good oral hygiene. Maintain good oral hygiene. The main functional exercise after radiotherapy for nasopharyngeal carcinoma is mouth opening training/neck twisting exercise to reduce temporomandibular joint/neck skin fibrosis; neck fibrosclerosis often appears several years after radiotherapy, manifested as neck muscle atrophy, neck thinning and skin thinning. Aggressive neck turning exercises may reduce its severity. At the same time, pharyngeal tube blowing exercises can be performed to prevent secondary deafness caused by pharyngeal tube fibrosis after radiotherapy; regular review: the follow-up period after nasopharyngeal cancer treatment is a life-long period. After 5 years, the examination will be repeated once a year.