Lung adenocarcinoma and squamous lung cancer belong to two different pathological types, and it is impossible to compare who is more serious, it mainly depends on the stage and prognosis of the disease. Lung adenocarcinoma and squamous lung cancer depend on the degree of differentiation of the cancer cells. If the cancer cells are less differentiated, the degree of malignancy will be higher, the cancer cells will grow faster, and it will be easier for systemic metastasis to occur. If the tumor is in the early stage, the degree of malignancy is relatively low and the severity is also relatively low. If both lung adenocarcinoma and lung squamous carcinoma are in advanced stages, both are more dangerous. Patients with early stage squamous lung cancer and lung adenocarcinoma are mainly treated by surgery with chemotherapy, radiotherapy and targeted drug therapy to control their conditions. It is recommended that patients go to hospitals for relevant examinations and standardized treatments in time.