Lung adenocarcinoma egfr20 mutation should be treated well, and can be treated by surgery, radiation and drugs according to the condition. 1. Surgery: Surgery can be the first choice of treatment for lung adenocarcinoma egfr20 mutation, but considering the different degrees of patients’ conditions, there is a difference in the choice of surgical measures. Doctors recommend lobectomy and mediastinal lymph node dissection to remove the cancer, so as to control the development of the disease and alleviate the symptoms of coughing and coughing up blood. 2. Radiotherapy: radiotherapy refers to the use of radiation outside the body to kill the tumor cells, and the radiotherapy methods for lung adenocarcinoma with egfr20 mutation mainly include radical radiotherapy, palliative radiotherapy and adjuvant radiotherapy, etc. Most of the patients can prolong the survival time and improve the quality of life during the onset of the disease through radiotherapy. 3. Drug therapy: for patients with egfr20 mutation of lung adenocarcinoma, they can be treated with drugs, such as gefitinib and erlotinib, which are good choices. When the drugs enter into the body, they can act on the tumor cells directly, so as to make the tumor cells die completely. In addition, chemotherapy drugs may also be needed for treatment. After the occurrence of lung adenocarcinoma egfr20 mutation in life, you need to go to the hospital in time, and the attending doctor will start the corresponding treatment according to the patient’s condition.