How long can one live with invasive lung adenocarcinoma cannot be generalized, and it needs to be judged according to the actual condition of the patient. For patients with less serious condition and the cancer cells have not yet metastasized, the 5-year survival period is around 50%. Lung adenocarcinoma is a common type of non-small cell lung cancer. Invasive lung adenocarcinoma means that the tumor breaks through the basal layer of lung epithelium and invades the surrounding lung tissues. How long this type of lung cancer patients can live cannot be generalized, and the remaining survival cycle is affected by the scope of tumor invasion, metastasis, patient’s physical quality, treatment and other factors. If the patient only shows infiltrative growth of the tumor, but the cancer cells have not metastasized, the 5-year survival rate can reach about 50% after active treatment. However, due to the local infiltrative nature of lung adenocarcinoma, the metastasis of cancer cells occurs earlier than other types of lung cancers, resulting in the condition of most of the patients having already progressed to intermediate-late stage or even late stage by the time they seek medical treatment and diagnosis. At this time, as the cancer cells have already spread and metastasized to other organs, the prognosis of patients after treatment is poor, and the 3-year survival rate of some patients may be less than 20%. To sum up, how long a patient can live with invasive adenocarcinoma of lung is obviously related to his/her condition, so it is suggested that he/she should seek medical treatment as early as possible to avoid delaying his/her condition.