Lung cancer is a very common cancer, ranking second in mortality rate of malignant tumors in China. Generally, the systemic symptoms of lung cancer are not obvious. Early stage may include cough, shortness of breath, blood in sputum and other symptoms of inflammation resembling tuberculosis, while late stage patients may have fever, emaciation, weakness and even appearing of epidemic. Early and middle stage lung cancer patients, whose digestive system function is sound, should seize the time to supplement the organism with nutrients after clinical diagnosis in order to improve physical quality, enhance resistance and prevent or delay the appearance of cachexia. If the nutrients are adequately filled before clinical treatment, patients with better body condition can tolerate chemotherapy and radiotherapy better and have better therapeutic effect; similarly, patients with better body condition are more receptive to surgery and can recover faster than those with poorer nutritional condition. Therefore, early to mid-stage lung cancer patients should be supplemented with various nutrients, such as high-quality protein, carbohydrates, fat, inorganic salts and multivitamins, as soon as their digestive and absorption capacity allows. For lung cancer patients with cough and coughing blood, there are many remedies and food recipes in Chinese medicine to nourish yin and moisten lung, stop cough and stop bleeding and astringency, such as almond jellyfish, lily of the valley and water chestnut, while lotus root, lotus seed, persimmon, duck pear, yam, lily of the valley and white fungus have the function of stopping cough and astringency to stop bleeding. According to the folk recipes, lung cancer patients can also eat mealybug, turtle paste, turtle meat, glutinous rice and other nourishing and tonic foods. Compared with digestive tract tumors, the diet of lung cancer patients should be relatively well resolved. In addition to the above-mentioned nourishing foods of TCM, lung cancer patients should choose milk, eggs, lean meat, animal liver, soybean products, fresh vegetables and fruits, etc., which can increase the amount and frequency of food intake as much as possible. Note: Patients with lung cancer should avoid fishy and greasy food, spicy and stimulating food such as tobacco and alcohol.