Babies with phlegm whistling in the throat is considered to be related to bronchitis, pneumonia, asthma, etc., and can be treated with general therapy and medication. 1. Bronchitis: dry cough in the early stage, and coughing up phlegm in the later stage. Need to often change position, so that respiratory secretions easy to discharge; can use aminoglutethimide, acetylcysteine and other expectorant drugs; bacterial infections caused by amoxicillin, penicillin and other antibiotic treatment as prescribed by the doctor. 2. Pneumonia: patients with bacterial pneumonia can be treated with antibiotics such as penicillin and cefixime, and those with viral pneumonia can be treated with antiviral drugs such as ribavirin and acyclovir. When the amount of sputum is too much, expectorant drugs can be used, such as ambroxol hydrochloride, bromhexine hydrochloride and so on. The baby’s back can be patted gently on a daily basis to promote the expulsion of phlegm. Create a good living environment and increase the baby’s water intake appropriately. All the above medicines should be used under doctor’s guidance, avoid self-medication. There are many other reasons for babies to have phlegm whistling in the throat. It is recommended to consult a doctor in time to have the baby evaluated by a specialist, improve the relevant examination and give targeted treatment or therapy.