Lung adenocarcinoma invading into dirty pleura is relatively serious. Firstly, if lung adenocarcinoma invades into the dirty pleura, it means that it does not only exist in the lungs, but also begins to invade the surrounding blood vessels, lymphatic vessels and pleura, and it is mostly in the middle stage or late stage; in addition, if it invades into the side of the pleura or pleura far away from the focal point, the staging will be even later, so the situation is still more serious. If lung adenocarcinoma invades into the pleura of dirty layer, the first choice of treatment for patients who can have surgery is still surgery, and after surgery, radiotherapy and chemotherapy are also needed to control the disease; if surgery is not possible, only conservative treatment and drainage treatment can be carried out to alleviate the symptoms and prolong the survival period.