Common causes of diarrhea in newborns are intestinal flora disorders, allergies or pathogenic microbial infections, etc. Taking probiotic drugs is not necessarily useful, depending on the cause of diarrhea to decide. 1. useful: if the newborn diarrhea is caused by intestinal flora disorders, you can follow the doctor’s instructions to take probiotic drugs to regulate, because probiotic drugs can regulate the balance of intestinal flora, promote the growth of beneficial intestinal flora, to help improve intestinal function, which helps to alleviate the phenomenon of diarrhea. 2. useless: if the newborn diarrhea is due to allergies or pathogenic microbial infections and other causes, simply by taking probiotic drugs generally do not have much effect, the need for targeted treatment. If allergic factors lead to diarrhea, you need to find out the allergens, away from allergic substances, if the baby is formula fed, the disease recovery period can choose the depth of hydrolyzed protein formula. If the pathogenic microbial infection caused by the baby diarrhea, you need to follow the doctor’s instructions to take antibiotics for treatment, such as bacterial infections, according to the drug allergy to choose the application of antimicrobial drugs, such as, cefixime and so on. If the viral infection, with self-limiting, can not be special medication. Severe diarrhea can be oral montelukast to stop diarrhea. Newborn diarrhea is recommended to actively go to the regular hospital, clear what causes, and then according to the situation to deal with. The above drugs need to be used in accordance with medical advice.