Phlegm in babies is a symptom caused by respiratory tract infection and increasing inflammatory secretions, especially when children do not spit out sputum on their own, which can easily lead to phlegm staying in the pharyngeal tube and the sound of purring. It can be treated with anti-inflammatory and phlegm-transforming drugs. It is recommended to take cefprozil dry mix suspension, ribavirin granules, together with aminoglutethimide hydrochloride oral solution, pediatric mugan granules and other drugs to carry out treatment. You should give your child more warm water or light honey water, and you can also use licorice and Chuanbei to make water to help dilute the phlegm. You can pat your child’s back more often to promote the expulsion of phlegm. If the phlegm is sticky and affects breathing, nebulized inhalation can also be used to dissolve the phlegm and administer oxygen. Keep indoor air temperature and humidity appropriate, avoid excessive cold and dryness. Pay attention to a light diet and do not eat stimulating foods such as too sweet and too salty.