Patients with invasive lung adenocarcinoma can eat mushrooms, which will not cause adverse effect on their diseases. Mushroom is a kind of fungus food, which contains vitamins, amino acids and other nutrients. Moderate consumption of mushrooms is good for patients with adenocarcinoma of the lung, which can replenish nutrients and promote gastrointestinal metabolism to expel metabolites from the body. Not only mushrooms can be eaten, but also other mushrooms, such as fungus, shiitake mushrooms, and so on. Patients with invasive lung adenocarcinoma should pay attention to the reasonable combination of meat and vegetables in their diet, eat more vitamins and proteins rich food, such as vegetables, fruits, lean meat, various kinds of fish soups, etc., and reduce the intake of greasy, spicy and pickled food, such as fried food, white wine, salted fish and salted vegetables.