Baby diarrhea after vaccination, the symptoms are not serious do not need special treatment, serious and timely medical treatment, give the appropriate antidiarrheal drugs treatment. But be alert to the possibility of a combination of enteritis and other causes of diarrhea, need to clarify the cause of targeted treatment. Baby diarrhea after vaccination may be caused by contact with exogenous antigenic substances that stimulate the body. Symptoms are mild, normal diet, sleep, good spirits, may not need excessive intervention, but should pay attention to daily diet, avoid cold, etc.. If the diarrhea is more serious, take probiotics, montelukast and other medications as prescribed by the doctor. If the mental state is not good and there is a significant decrease in urine output, can be given rehydration salts solution to prevent dehydration and electrolyte disorders. Baby diarrhea after vaccination, may also be after vaccination due to dietary impurity, do not pay attention to hygiene, caused by bacterial enteritis, resulting in diarrhea, in addition to giving montelukastan and other symptomatic treatment, but also need to be given to the cephalosporin and other antibiotics anti-infective treatment, the medication should follow the doctor’s instructions. The baby after vaccination diarrhea, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.