Coughing with white sputum can be seen in a variety of diseases, commonly seen in chronic pharyngitis, chronic bronchitis, fine bronchial alveolar carcinoma and so on. 1. Chronic pharyngitis: chronic pharyngitis may cause lymphoid follicle hyperplasia in the posterior wall of the pharynx, resulting in coughing and spitting white sputum and other symptoms. 2. Chronic bronchitis: the main symptoms are coughing, coughing up sputum or accompanied by wheezing. When chronic bronchitis is not combined with infection, coughing, coughing up sputum, sputum is usually white mucus or plasma foamy. 3. Fine bronchioloalveolar carcinoma: clinical manifestations include cough, sputum, hemoptysis, chest tightness, chest pain, weight loss, dyspnea, etc. Coughing and coughing up a large amount of white foamy sputum are rare but characteristic clinical manifestations of fine bronchioloalveolar carcinoma. Coughing up white sputum may have other reasons, such as allergic asthma, rhinitis, sinusitis, pulmonary heart disease, etc. It is necessary to go to regular hospitals in time for examination, clear diagnosis, and actively cooperate with doctors for treatment, and do not take medicines by oneself, so as to avoid delaying the condition, which may lead to adverse consequences.