There is no quick way to clear phlegm in the throat because there are many causes, which can be caused by acute upper respiratory tract infections, sinusitis, pneumonia, etc. It needs to be treated with general therapy, medications such as cephalexin, and surgery if necessary. 1. Acute upper respiratory tract infection: If it is caused by virus, generally no special medication is needed. If the combination of bacterial infection, should follow the use of cefixime, amoxicillin and other antibacterial drugs; if the influenza virus caused by the application of oseltamivir and other antiviral drugs. 2. Sinusitis: it causes a significant increase in intranasal secretions, which can irritate the throat during sleep due to postnasal drip, triggering cough and phlegm. Need to use saline nasal wash, acute attack oral cefixime anti-infection. If it can not be improved by conventional treatment, it can be treated with surgery under nasal endoscopy if necessary. 3. Pneumonia: often accompanied by cough, sputum, fever, wheezing, dyspnea and other symptoms, can be combined with budesonide nebulization. When combined with mycoplasma infection, use azithromycin and other anti-infective treatment. The baby cough phlegm may also be other reasons, such as acute laryngitis, etc., it is recommended to consult a doctor in a timely manner, to identify the cause, with the doctor to take the correct way to dispose of, the above medication to follow the doctor’s instructions.