There is no such thing as the best prognosis of lung cancer, and the prognosis of patients should be analyzed by combining pathological type, stage and other factors. There are many types of lung cancer, although there is a certain relationship between its prognosis and its pathological type, it is not entirely determined by it, but also needs to be analyzed in combination with staging, treatment, etc. Therefore, there is no such thing as the type of lung cancer with the best prognosis. Therefore, there is no such thing as the best prognosis for lung cancer type. It only means that under the same situation of staging and treatment, highly differentiated lung cancer has a slower development and lower degree of malignancy compared with low-differentiated or undifferentiated lung cancer, so the overall prognosis is relatively better; if it is the same type of lung cancer, the prognosis is mainly based on the patient’s staging situation, the earlier the patient’s prognosis is the better, and the more difficult it is for the patient to receive treatment when his/her staging is later. No matter what type of lung cancer it is, once it is detected, it needs to be treated in time in order to control the disease effectively.