Older people always cough and spit up white mucus sputum consider related to upper respiratory tract infection, viral pneumonia, chronic bronchitis, chronic obstructive pulmonary disease. 1. Upper respiratory tract infection: If the elderly suffer from upper respiratory tract infection, it is easy to accompany the phenomenon of always coughing and spitting white mucous sputum. The disease is mainly related to viral and bacterial infections, while the decline in immunity, rain and other triggering factors. Patients are also prone to sneezing, runny nose and other symptoms. 2. Viral Pneumonia: It is mainly related to viral infections, such as influenza virus and adenovirus. Typical symptoms of patients include fever, chills, headache, weakness, body aches and pains, etc. Some patients may have a general cough and spit up white mucous phlegm. 3. Chronic bronchitis: the cause of the disease is not clear, but it is considered to be related to pathogen infection and airway hyperresponsiveness. Disease can cause patients to cough, cough sputum, wheezing, shortness of breath and other symptoms, some patients may also cough white foamy or slurry sputum. 4. Chronic Obstructive Pulmonary Disease (COPD): The cause of COPD is unclear, but it is considered to be related to genetics and long-term smoking. Patients are prone to chronic cough, dyspnea, coughing up sputum, chest tightness, wheezing, etc., which can also be manifested as a total cough, spitting white mucus sputum. Elderly people always cough, spit white mucus sputum may also be other reasons, it is recommended that timely medical examination, in order to clarify the cause of the cause of treatment, so as to alleviate the discomfort symptoms.