As radiotherapy can produce side effects and adverse reactions, it can lead to physical weakness and loss of appetite. Therefore, at this time, the diet needs to be nutritionally balanced and light and easy to digest, avoiding irritating or indigestible food, which may aggravate the burden on the patient’s gastrointestinal tract, or aggravate the adverse effects of radiotherapy, triggering nausea, vomiting and other symptoms. Common foods and drugs that promote recovery after radiotherapy are as follows: 1, food: 1, high protein food: such as eggs, milk, beans, lean meat, etc., can provide high-quality protein, supplementing the nutrients required by the patient’s body after surgery to promote physical recovery; 2, high-calorie staple foods: staple foods with fine grains and coarse grains can provide high calories and dietary fiber, which can help the gastrointestinal tract peristalsis and prevent constipation; 3, fresh fruits and vegetables: fresh Vegetables and fruits are rich in fiber and vitamins, such as celery, tomatoes, apples, kiwi, etc., can promote gastrointestinal tract peristalsis, can also supplement the body’s needs of water and various trace elements, beneficial to the body. Second, drugs: 1, vitamin B: because long time radiotherapy can damage mucous membrane, resulting in nausea, vomiting, mouth ulcers and other symptoms, vitamin B can promote mucous membrane repair and relieve mouth ulcers; 2, other drugs: patients with low immunity, can take appropriate immunity-enhancing drugs, such as pidomod granules, thymidine, etc. In addition, patients may have complications after radiotherapy, and it is recommended to take the corresponding drugs according to the specific conditions as prescribed by the doctor.