Lung cancer patients usually have no special contraindications and can maintain normal diet. Lung cancer is a malignant tumor disease that occurs in the lungs, patients can just maintain a normal diet in daily life, and usually have no special dietary contraindications as they are not allergic to food. It is recommended to eat more fruits and vegetables as well as lean meat, fish, eggs and other high protein, and increase the content of vegetables, fruits and cereals in the diet. Lung cancer patients should pay attention to avoid eating too much spicy and stimulating or greasy food, such as animal offal, fat meat or garlic, to avoid irritation to the stomach and esophagus, which may cause pain or cough and other symptoms. After getting lung cancer, patients should actively cooperate with doctors and choose appropriate methods to treat the disease, which can help prolong the survival period. They should change their bad habits, quit smoking, avoid passive smoking, pay attention to rest, proper exercise and regular medical checkup.