Clinical cause patients to cough, cough white sputum, foamy sputum more cases, should be clear cause and then take treatment measures: 1, if the above symptoms are due to laryngitis caused by, can be through the use of Banlangen, clear pharyngeal and throat particles, etc. have the effect of clearing the throat and laryngeal drugs for treatment in order to alleviate the symptoms. 2, if it is due to the trachea bronchus infected with bacteria and other pathogens caused by the consumption of cephalosporin and other cephalosporins antibiotics for treatment. The first thing you need to do is to take a cephalosporin antibiotic such as Denis, and for patients who are prone to allergies you can take azithromycin to prevent allergies to cephalosporin.3. If it is due to a tracheal or bronchial infection caused by viruses, you can take oseltamivir for treatment, and at the same time, patients should pay attention to drink more water, eat more pears, apples and other fruits that contain high levels of vitamins.