There are two types of phlegm remedies suitable for babies: one is western medicine, such as Ambroxol Hydrochloride Oral Liquid and Acetylcysteine Granules. The other category is Chinese medicine, such as expectorant oral liquid also known as compound fresh bamboo leech liquid, pediatric phlegm granules, etc. These medicines can dilute phlegm and make it easier for baby to cough out. These medicines can dilute the phlegm and make it easier for the baby to cough up. You can also use inhalation acetylcysteine to do nebulized inhalation to achieve the purpose of phlegm and cough. It is not recommended to use cough suppressants such as cotrimoxazole syrup. Western cough suppressants can inhibit the baby’s cough, but it will cause phlegm to be deposited in the trachea and at the bottom of the lungs, which will lead to overgrowth of pathogenic bacteria, affecting the therapeutic effect.