Patients with lung adenocarcinoma cannot be treated by eating food, so there is no such thing as what to eat to get well faster. While clinical treatment of lung adenocarcinoma is being carried out, giving nutritionally balanced food will help the immune function and physical strength of the body. Lung adenocarcinoma can be divided into different treatments according to clinical staging. Early-stage patients can generally take surgical resection, while middle and late-stage patients can choose chemotherapy, targeted therapy, immunotherapy, radiotherapy and so on according to their own conditions. In the process of anti-tumor treatment, a lot of physical strength and nutrients will be consumed, so daily nutrition should be supplemented to improve the immunity of the body, and some protein-rich foods such as fish, meat, eggs, etc. should be consumed to replenish enough physical strength in order to have a better state to cope with the tumor treatment.