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. It is a well-known fact that smoking leads to lung cancer. 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 Lung cancer patients’ digestive system is relatively normal in the early stage of the disease. 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 heat, and enough vitamins. Diversification of meals, eating less and more meals has a good effect on increasing patients’ appetite and appetite. 3.Appropriate supplementation of specific ingredients to resist lung cancer; Shiitake 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, they can consume red dates in appropriate amount, 30g of jujube, 30 of yam, 60g of glutinous rice, boil and eat 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. Avoid ingredients that promote cell proliferation, such as ginseng, etc.