Cancer is a major disease threatening human health, and its incidence rate is increasing year by year, and the mortality rate is also very high. Lung cancer is one of the common cancers, and the following is an introduction to the causative factors of lung cancer and the dietary treatment for lung cancer. Lung cancer is caused by four kinds of gas. When it comes to the causative factors of lung cancer, we have to mention the word “gas”. To sum up, there are four types of “qi” that can be attributed to the high risk factors of lung cancer. The first one is “smoke”. There are hundreds of harmful substances in tobacco, and these substances are the primary attack factor of lung cancer through long-term stimulation for more than 20 years. 85% of lung cancer deaths are related to first-hand, second-hand and third-hand smoke. The second gas is “atmosphere”, atmospheric pollution and environmental pollution are important reasons for the high incidence of lung cancer in China, and PM2.5 is even more powerful than tobacco in areas with serious exceedances, because PM2.5 can be inhaled directly into the alveoli, stay in the alveoli, and even enter the blood through it. The third gas is “internal gas”, indoor air, indoor air also includes second-hand smoke, decoration pollution, as well as kitchen fumes pollution and gas, gas itself is harmful, especially in northern areas, heating, boiling water, stir-fry are used it. The fourth gas is “anger”. People who are often angry and in a bad mood have a higher chance of developing cancer, which is suitable for all cancers, and lung cancer is the same. (1) Honey lung and cough pill: equal parts of beehive and silkworm, and appropriate amount of honey. Grind the 3 herbs and make honey into pills. Take 6 grams twice a day. Effects: Moisten lung, dissolve phlegm, disperse nodules and subdue swelling. It is suitable for people with obvious cough in lung cancer. (2) licorice and snow pear boiled pig lung: 10 grams of licorice, 2 snow pears, about 250 grams of pig lung. Pear peeled and cut into pieces, pork lung washed and cut into slices, squeeze out the foam, with licorice put in a casserole. Add a little rock sugar, water appropriate amount of small fire boilers 3 hours after taking. Once a day, it has the effect of moistening the lungs and removing phlegm, and is suitable for people with coughs. (3) Almond paste with rock sugar: 15 grams of sweet almonds, 3 grams of bitter almonds, 50 grams of round-grained rice, and the right amount of rock sugar. Soak sweet almonds and bitter almonds in water to soften and remove the skin, pound them, add round-grained rice, water and rock sugar to make a thick porridge, once every other day. (4) white fruit and date porridge: 25 grams of white fruit, 20 red dates, 50 grams of glutinous rice. The white fruit, red dates, glutinous rice together to cook the porridge is ready. (5) Angelica dahurica stewed bird’s nest: 9 grams of Angelica dahurica, 9 grams of bird’s nest, the right amount of rock sugar. Stew dahurica and bird’s nest in water until very rotten, strain and remove the residue. Add the right amount of rock sugar seasoning and then stew for a few moments that is ready, 1 to 2 times a day. With lung nourishing yin, stop coughing and stop bleeding effect. (6) ginkgo steamed duck: 200 grams of white fruit, white duck 1. White fruit shelled, boiled in boiling water, remove the skin, pistil, and then blanched in boiling water and mixed into the meat of the duck killed and boned. Add broth, cage steamed for 2 hours until the duck meat is cooked and eaten. It can be consumed regularly and has the ability to tonic deficiency, calm asthma, and promote water retention and reduce swelling. It is suitable for advanced lung cancer with wheezing and weakness, generalized weakness and excessive phlegm. (7) Stewed meat with Schisandra: 50 grams of Schisandra, appropriate amount of duck meat or pork lean meat. Steamed or stewed with meat, and add seasonings as appropriate. Meat, medicine and soup are all taken together, which can nourish the lung and benefit the kidney, stop cough and calm asthma, suitable for lung cancer patients with kidney deficiency. (8) Lotus seed chicken: 15 grams of lotus seed ginseng, chicken or duck, pork in appropriate amounts. Lotus seeds and meat stewed together, add seasoning as appropriate. Take it regularly to nourish the lung, benefit the qi and promote the production of body fluid. It is suitable for those who have insufficient qi and blood for lung cancer. (9) Winter melon skin and fava bean soup: 60 grams of winter melon skin, 60 grams of winter melon seeds and 60 grams of fava beans. Put the above foods into a pot and add 3 bowls of water to fry to 1 bowl, then add appropriate seasonings to make it, remove the dregs and drink. Effects: Removing dampness, inducing diuresis and reducing swelling. It is suitable for those with lung cancer with pleural fluid. Example of one day recipe for lung cancer Breakfast: milk (250g fresh milk, 10g sugar), 1 hard-boiled egg (50g egg), steamed bun (50g flour), mixed vegetable (70g celery, 10g bean curd) Extra meal: fruit (250g duck pear) Lunch: rice (100g rice), minced meat and tofu (100g minced meat, 100g tofu), shredded green pepper and radish (200g green pepper. (shredded radish 50g) Additional meal: fresh fruit juice (fresh orange juice 200g) Dinner: millet porridge (millet 25g), hair cake (flour 75g), fried bean sprouts (mung bean sprouts 200g), steamed fish (carp 75g) 40g of oil for cooking the whole day