These symptoms are the most common radiation therapy reactions of head and neck or chest tumor patients, which are caused by radiation damage to salivary glands and mucous membrane. Diet: Drink more yogurt, or use herbal decoction of herbal cassia, raw licorice or water of American ginseng as tea. Eat a cool, non-stimulating diet. The temperature of meals should not be too hot, and meat should be finely chopped. Vegetables or fruits can be squeezed into juice for drinking if they cannot be swallowed. 2. Loss of appetite and sluggish sense of taste The patient’s family should patiently encourage the patient to eat more, and the diet should be nutritious, light and easily digestible sweet products. Mobilize the patient’s sense of sight and smell to increase appetite and increase the patient’s usual favorite foods. The diet adopts the way of less food and more meals. 3, nausea, vomiting Diet should be light and less greasy, eat less and more meals. A small amount of ginger juice can be put in the dish to taste, as far as possible to avoid the smell of not fresh, strange protein food and other food, 4, abdominal leakage intestinal mucosa intestinal peristalsis accelerated, it is appropriate to eat easy to digest, slightly light, less greasy food, such as semi-liquid diet or less slag diet such as noodle soup, etc., avoid eating more fiber food and sticky, cold food, etc. 5, bloating, constipation should be appropriate to increase the amount of activity, eat more fresh vegetables, fruits (bananas, kiwi apples) and other foods containing a large amount of fiber. Recommended fruits: such as bananas, apples, sweet potatoes, etc. Except for those who take a glass of honey water combined with diabetes every day? 7, urinary frequency, urinary urgency, urinary pain and hematuria This is a symptom of radioactive bladder, which often occurs in radiation therapy or radiation treatment of pelvic tumors such as bladder cancer, cervical cancer and prostate cancer. Emphasis on excretion: let patients drink more water and urinate more often, plus take baking soda to make the urine alkaline. As radiation therapy can cause bone marrow suppression, manifested as a decrease in white blood cells, red blood cells or platelets, attention should be paid to strengthening nutrition and eating more “blood-raising” foods. Cooked. Foods containing more iron such as animal liver, kidney, heart, lean meat, egg yolk, as well as spinach, celery, tomatoes. Fruits can be given apricots, peaches, plums, raisins, red dates, pineapples, prunes, oranges, tangerines, grapefruit and figs. ? Fresh ginger slices in the mouth or decoction of Chinese herbal medicine Chen Pi, persimmon tips and bamboo rhizome as tea can reduce the gastrointestinal tract reaction. Adjusting the diet of radiotherapy patients still requires the joint efforts of patients’ families and requires more patience and care to do better.