Ice sugar boiled pear water for the treatment of cough has a certain auxiliary effect, but in the clinical should find out what is the cause of cough. Cough is a relatively common clinical symptoms, seen in many diseases, such as acute bronchitis, chronic bronchitis, bronchial dilatation, pneumonia, tuberculosis can cause cough. Therefore, the following examinations are needed to improve the cough: CT of the lungs and blood tests, C-reactive protein and calcitoninogen and other inflammatory-related indexes can be improved. If the lung CT suggests pneumonia or chronic bronchitis, and the inflammatory indexes are higher than normal, according to the results of sputum culture, sensitive antibacterial drugs can be used for anti-infective treatment, which may have a better effect on the treatment of cough.