Patients with lung adenocarcinoma who have excessive sputum should be examined and treated in time, and they should be treated with sputum chemotherapy and anti-infection therapy, and also take corresponding measures for lung cancer. 1. Relieve cough and resolve sputum: For the symptoms of cough and sputum, some medicines can be used to resolve sputum, such as acetylcysteine, aminobromine, etc., to dilute sputum, which is conducive to expulsion. It can also stimulate phlegm discharge through position and maneuver, and if the patient’s condition is poor, it can be given suction treatment. 2. Anti-infection treatment: patients with lung adenocarcinoma may have excessive sputum, which may be combined with infection. Sputum can be cultured and sensitive antibiotics can be used under doctor’s guidance. 3. Tumor: Lung adenocarcinoma may compress the airway and affect sputum discharge. Early stage of lung adenocarcinoma is mainly treated by surgery and postoperative adjuvant radiotherapy and chemotherapy, while in middle and late stage, genetic test can be carried out, and if there is any mutation of the gene target point, targeted drugs such as gefitinib and erlotinib can be used for treatment. Warm reminder:Lung adenocarcinoma with excessive sputum should be treated in time, and all the above drugs should be used under doctor’s guidance to avoid respiratory failure.