Gastrointestinal toxic side effects after chemotherapy for lung cancer directly affect whether chemotherapy can be adhered to and the effect of chemotherapy. Encourage patients to have small amount and multiple meals, and the diet should be light. Eat fluids and semi-fluids that are easy to digest and contain little fiber, and avoid spicy, cold, too hard and too greasy foods. In addition, chemical drugs can cause leukopenia, so you should eat more food rich in protein, iron and vitamins, such as animal liver, lean meat, jujube, cinnamon, gum, fresh fruits and vegetables. Patients with loss of appetite, indigestion and diarrhea can be supplemented with foods that strengthen the spleen and nourish the stomach, such as Job’s tears, white lentils and jujubes. For patients with severe reactions and long-term nutritional intake disorders, extra-gastrointestinal nutritional input can be considered to improve the patient’s condition. In the process of chemotherapy, chemotherapy patients generally have a lack of appetite, single supplementation from the vein can not guarantee the patient’s energy supply, is not conducive to the recovery of the disease, can be given to the patient oral polypeptide tablets, domperidone tablets and so on to help digestion, improve appetite. At the same time, we should patiently persuade and encourage the patient to eat. For severe vomiting, observe the frequency, amount and color of vomiting, and apply antiemetic therapy. If there is liver function damage, patients should rest in bed, eat less and more meals, and enter nutritious and easy-to-digest diet. Most chemotherapeutic drugs have myelosuppressive effect, resulting in low immune function, lowered body resistance, decreased white blood cells, easy to lead to infection. Patients pay attention to personal hygiene, keep the skin and mouth clean, brush teeth and wipe the body every morning and evening. Keep the indoor air circulation, fresh, at the same time, follow the doctor’s instructions to correctly use blood-boosting drugs, closely observe the blood changes, routine temperature testing, early detection of signs of infection. During the period of chemotherapy, drink a lot of water, about 1500ml per day, to facilitate the excretion of chemotherapy drugs and prevent the precipitation of high concentration of uric acid induced kidney stones. The limb on the side receiving intravenous infusion should not be moved too much to prevent extravasation of drugs caused by displacement of the puncture needle, which may lead to local tissue necrosis. Skin toxicity reaction, avoid scratching, pay attention to keep the skin clean and dry to avoid infection. Muscle aches and pains often occur 2 to 3 days after chemotherapy, and most of them return to normal in about 1 week. This symptom is reversible. Assist in daily life, massage the sore spot, help to distract their attention, reduce their discomfort, and if conditions permit, physical therapy can be carried out. 1. Before chemotherapy: Before chemotherapy, eat a balanced diet that includes five major food groups: cereals and potatoes (rice, pasta), vegetables and fruits (about 600-800 grams), meat, poultry and eggs (about 50-100 grams of lean meat, chicken or fish, and one egg), milk and soy products (one bag of milk, 50-100 grams of soy products), and oils and fats (about 25 grams). The diet should consist of 4-5 meals per day, with fruit as the main ingredient for additional meals. Eat a low-fat, high-carbohydrate, high-vitamin and mineral diet the day before chemotherapy. Choose foods such as rice, pasta, fish, chicken, eggs, lean meat, tofu, vegetables and fruits. 2. During chemotherapy: Try not to eat your favorite food within 24 hours of the beginning of chemotherapy, because it will affect your feeling of this food later. Dietary requirements for low-fat, high-carbohydrate, a small amount of high-quality protein. The daily diet is based on is cereals, vegetables, fruits, with easily digestible chicken, fish and eggs, etc., and can be supplemented with protein powder (soy or egg white) as appropriate. Less oil. If the treatment response is heavy, the diet is mainly fluid. Vegetable soup, rice soup, fruit juice and some elemental diets are available. Chewing ginger has a certain effect of stopping vomiting. 3, after chemotherapy: After chemotherapy, the body is weaker, it is advisable to choose nutritious and easy to digest food, such as soft rice, rice, bread, steamed bread, buns, fish, eggs, chicken, soup, potatoes, bananas, jams and so on. Eat smaller and more frequent meals and you can use ginger to stimulate your appetite. If weight loss is significant, then you can use an elemental diet. Replace milk with yogurt to avoid abdominal bloating. Exercise properly. Some of the ways to deal with nausea and vomiting during chemotherapy are as follows: Nausea and vomiting are two of the most common and scary side effects of chemotherapy. The frequency and severity vary with different drugs and different people. Nausea and vomiting usually occur a few hours after chemotherapy and do not last long. Severe nausea and vomiting that lasts for several days is uncommon. It is important to inform the doctor or nurse when a patient is unusually nauseous, vomits for more than a day, or is so nauseous that he or she cannot even swallow fluids. Changing diet and taking antiemetic medications can reduce both symptoms. Different antiemetic medications work for different people, so it is inevitable to try several medications before the symptoms subside. Do not give up so easily, and the patient should continue to work with the doctor to find out what works best for him or her. About half of all chemotherapy patients feel emotionally unstable before chemotherapy, this is called pre-treatment nausea. The best way to combat pre-treatment nausea is with the help of relaxation techniques.