Radiotherapy is currently the most effective way to treat nasopharyngeal carcinoma, but radiation has certain damaging effects on irradiated local tissues, causing side effects such as painful ulceration of skin and mucous membrane, palatability, dental caries, sore throat, jaw joint pain and restricted movement after radiotherapy to varying degrees. A recent study reported that health education for patients can help reduce the side effects of radiotherapy and improve patient satisfaction. Specific health education includes the following contents: 1. Psychological guidance. The responsible nurse communicates and talks with patients to increase patients’ trust, and explains in detail about the knowledge related to nasopharyngeal cancer treatment, adverse reactions and precautions in the treatment stage to improve patients’ cognition and increase their psychological tolerance. 2. Dietary guidance. During radiotherapy, patients need to enhance nutrition, but oral mucosa and salivary gland damage often cause appetite loss. Patients should try to eat high protein, high nutrition, high vitamin, easy to digest food; family members should try to meet the patient’s taste, to achieve dietary diversity; drink more water, eat more vegetables and fruits, no stimulating and spicy food. 3, skin care guidance. Radiotherapy can cause skin damage. During radiotherapy, patients should wear loose and soft clothes, avoid wearing hard and high-collared clothes; avoid rubbing the skin of radiation field to prevent aggravating the injury; pay attention to the skin care of radiation field, keep the local clean and dry, prohibit the application of adhesive tape and irritating drugs. 4.Guidance on oral and dental care. After radiotherapy, local mucous membrane damage, dry mouth, dental caries and other symptoms often appear. Patients should brush and rinse their teeth correctly, use a soft brush with a small and soft head, brush their teeth every morning and evening, and brush for at least 3 minutes each time; patients can make their own honeysuckle water to rinse their mouth, and try to make the liquid fully contact with teeth, gums and oral mucosa when rinsing, and rinse for 1-2 minutes. 5.Nasal cavity care guidance. Radiation damage to the nasal mucosa can cause a decrease in normal secretion and cleaning function, and can easily lead to secondary infection. Patients can perform nasal rinsing 1-2 times a day until six months after the end of radiotherapy. 6. Rehabilitation guidance for difficulty in opening the mouth. Radiotherapy often causes difficulty in opening the mouth. Patients should have early rehabilitation training at the beginning of radiotherapy. Patients should massage the temporomandibular joint, practice cheek puffing, tooth knocking and mouth opening for 15-20 minutes each time, 3-5 times a day.