Erythromycin belongs to the macrolide antibiotics, which is mainly used for anti-infection treatment under normal dose, and small dose of erythromycin mainly has the effect of promoting gastric motility. The side effects of erythromycin in babies should pay attention to the following: the first one is more common is the digestive side effects, for example, after erythromycin, babies may experience nausea, vomiting, decreased appetite, which may lead to diarrhea, abdominal distension and other digestive symptoms in serious cases. Secondly, there may be some damage to the baby’s liver and kidney function, so be sure to pay attention to regular rechecking of liver function and kidney function. Thirdly, although erythromycin belongs to the macrolide antibiotics, the possibility of allergy is relatively small, but there are still some babies with high sensitivity may have allergic symptoms. For example, the appearance of hives, the emergence of obvious allergic symptoms of the digestive system, etc.