A good diet is very important for lung cancer patients to recover. A good diet can effectively keep the patient’s body in normal condition and effectively inhibit the progress and metastasis of lung cancer. (1) Quitting smoking is the most important thing. It is a well-known fact that smoking leads to lung cancer, and quitting smoking, no matter early or late, has a certain inhibiting effect on the occurrence and development of lung cancer. (2) Balanced nutrition helps lung cancer treatment. They should take this opportunity to supplement nutrition in time, so as to improve their physical quality and strengthen their resistance. Meat, fish, eggs, milk, beans, rice, flour, coarse grains, fresh vegetables and fruits should be chosen to provide rich protein, sufficient calories and adequate vitamins. Diversification of meals and eating less and more meals have a good effect on increasing the appetite and quantity of food of patients. (c) Appropriate supplementation of specific ingredients to resist lung cancer must be consumed with sufficient amount of lean meat, eggs and milk daily to supplement protein; asparagus contains asparagine, asparagine, aspartic acid and various sterols, which have the function of preventing the spread of cancer cells and can be consumed appropriately; plants of cruciferous family, such as cauliflower and cabbage, can improve the immunity of the body and fight against cancer cells, which is the priority choice for lung cancer patients Mushrooms and fungus can not only improve immunity, but also nourish yin and moisten lungs, which are also the priority choices for lung cancer patients. White radish and pear can also be eaten more often. They can pass through the lung meridian and have the effect of relieving cough, resolving phlegm and calming asthma. Especially pear can reduce dry cough caused by radiotherapy and chemotherapy, however, patients with bad stomach need to pay attention not to eat pear on an empty stomach, it is better to boil water with pear and drink it after meal. Some patients are tired after chemotherapy, so they can consume red dates in appropriate amount, such as 30g of jujube, 30 of yam and 60g of glutinous rice, boiled with thin rice, twice a day; or drink water with torn red dates. (4) Lung cancer patients need to use less or avoid using the following ingredients: avoid smoking and alcohol. Avoid spicy and stimulating food, such as pepper, chili, cinnamon, etc. Avoid hot foods such as fried and barbecued foods. Avoid greasy, sticky and phlegm-producing foods. Go for it! Let’s overcome the disease together!