The specific treatment for infants with sputum is as follows: First, infants can be given oral medications to reduce sputum, commonly used are aminoglutethimide oral solution or amiloride, which is beneficial to reduce sputum. Parents can give nebulized inhalation treatment, which can act directly on the respiratory tract and facilitate the absorption and discharge of phlegm. If the phlegm is especially large or causes the child to have phlegm in the pharynx, discomfort and crying, it can also be combined with nebulized inhalation followed by aspiration treatment. Third, parents should turn and tap the child’s back diligently in daily life, and tap the child’s back from the bottom of the lung to the tip of the lung, which is conducive to the shock and discharge of phlegm. If the effect of oral medicine and nebulized inhalation is not obvious, intravenous infusion, phlegm and symptomatic anti-inflammatory methods can also be taken to resolve phlegm.