With four times of chemotherapy in early stage of invasive lung adenocarcinoma, the survival rate of five years after treatment is about 70%, and the prognosis is relatively good, patients should actively cooperate with the treatment and do not need to be overly panicked. Invasive lung adenocarcinoma is a malignant tumor of the respiratory system caused by heredity, smoking, environment and other factors. Early stage patients with relatively confined foci and mild condition can be treated by radical surgery, and then postoperative adjuvant chemotherapy can be carried out after the surgery if the margins of the cuts are positive, or patients who are unable to undergo surgery can be treated by radiotherapy, chemotherapy and other methods. After active treatment, early-stage lung adenocarcinoma can obtain a five-year survival rate of about 70%, and the overall prognosis is good. However, after surgery, patients still need to pay attention to regular checkups and smoking cessation in order to minimize the chance of recurrence and prolong the survival time.