The 5-year survival rate of invasive lung adenocarcinoma and partially mucinous adenocarcinoma is around 5%-70%, depending on the stage, patient’s physical condition and treatment effect. Generally speaking, the 5-year survival rate of invasive lung adenocarcinoma and partial mucinous adenocarcinoma is about 70%, among which, the 5-year survival rate of stage IA can be more than 80%. The 5-year survival rate of stage II is about 40%. The 5-year survival rate of stage III is about 15%. Stage IV 5-year survival rate is less than 5%. In addition, the prognosis is relatively good if the patient is young, has no underlying cardiopulmonary disease, is in good health, and responds well to treatment. Elderly patients with multiple underlying cardiopulmonary diseases who cannot tolerate the intensity of treatment have a relatively poorer prognosis. It is recommended that patients should consult the doctor in time and choose the appropriate treatment plan according to the stage of lung cancer and other comprehensive conditions under the guidance of specialists in order to improve the survival rate and quality of life.