Expectorant cough is mainly for the cause of treatment, may be bacterial infection, mycoplasma infection, reflux disease, etc., need to target the use of antibiotic drugs, acid-suppressing drugs, gastric motivation drugs, cough and expectorant drugs and other treatments. 1. Bacterial infection: generally use penicillin or cephalosporin antibiotic drugs, such as penicillin V potassium, cefdinir, cefadroxil, some patients are allergic to penicillin or cephalosporin antibiotic drugs, forbidden to take. 2. Mycoplasma infection: generally choose macrolide antibiotic drugs, such as clindamycin, azithromycin and so on. 3. Reflux disease: acid-suppressing drugs can be taken to inhibit the secretion of gastric acid, such as omeprazole, rabeprazole, and with the promotion of gastric power drugs, such as mosapride, domperidone. In addition to the need for causative treatment, symptomatic treatment is also needed, mainly the use of cough expectorant drugs, such as aminobromine hydrochloride, bromhexine and so on. The above medications should be applied in a standardized and reasonable manner under the guidance of professional physicians and pharmacists. If the symptoms fail to improve or even worsen gradually, it is necessary to consult a regular hospital in time and cooperate with the doctor to improve the examination and standardized treatment.