Malignant tumors are wasting diseases, and the general condition of patients with advanced lung cancer is usually poor, with signs of lethargy, poor nausea, low protein, and bone marrow suppression. The patient’s diet is very important at this time because the patient’s appetite is usually poor and the patient is under the side effects of chemotherapy drugs. It is recommended that the patient has a high energy diet and timely protein supplement at this time. For example, dairy, soy products, meat, etc. Patients need a light diet, avoid spicy and greasy, the recommended way of cooking, mainly steamed.