Sputum white and salty is considered to be inflammation of the respiratory system, which may be caused by chronic obstructive pulmonary disease, bronchitis, bronchitis and other diseases. 1. Chronic obstructive pulmonary disease (COPD): The cause of COPD is still unclear, and it is considered to be the result of a combination of internal and external factors. The main symptoms of patients are chronic cough, cough sputum, shortness of breath, etc. Patients cough sputum mainly in white mucus. 2. Bronchitis: acute or chronic bronchitis is mainly caused by biological or non-biological factors, patients will have fever, headache, cough, etc.. Patients with bronchitis also cough up sputum, which is usually white mucus. 3. Bronchitis: Acute or chronic bronchitis is mainly caused by viral and bacterial infections as well as environmental and genetic factors. The main symptoms of patients are coughing, wheezing, coughing up sputum, etc. When patients cough up sputum, the sputum is mainly white sputum. Patients with symptoms of white sputum and salty sputum should go to the hospital in a timely manner to identify the cause of the disease and take treatment measures under the guidance of the doctor.