Long-term white sputum may be caused by viral colds and chronic pharyngitis or chronic bronchitis and other diseases, the patient can choose the appropriate medication for the cause of the disease. 1. Chronic pharyngitis: chronic pharyngitis patients should first pay attention to adhere to the outdoor exercise, enhance physical fitness, under the guidance of the doctor to choose the iodine containing tablets, watermelon cream containing tablets, and throat particles and other medication, to reduce the symptoms of long-term white sputum. 2. Chronic bronchitis: chronic bronchitis patients can take levofloxacin and amoxicillin and other drugs to kill the pathogenic bacteria, and then you can also take bromhexine and aminoglutethimide hydrochloride and other medications, which can improve long-term white sputum. Medicines such as compound licorice tablets and amoxicillin are prescription medicines and should be used under the supervision of a doctor. There are other causes of prolonged white sputum, so it is recommended to go to the hospital in time and undergo relevant examinations to identify the cause of the disease and carry out treatment.