It is recommended to identify the cause of diarrhea in babies and treat the cause accordingly. Common causes include allergy, lactose intolerance, infection and so on. It is recommended to go to the hospital in time to clarify the cause of the disease. 1. Allergy: allergic diarrhea may be caused when the baby eats allergens, and may be accompanied by rashes, runny nose, sneezing and other symptoms. Anti-allergy drugs such as cetirizine hydrochloride drops can be used for treatment. 2. Lactose intolerance: abdominal distension, hyperactive bowel sounds, abdominal pain, diarrhea and other symptoms may occur after eating. Oral probiotics such as bacillus subtilis bacillus granules to regulate intestinal flora, and to replace lactose-free or low-lactose milk powder feeding. 3. Infection: the baby’s intestinal tract is infected by fungi, bacteria, viruses and other infections that can cause diarrhea, bloating, vomiting, abdominal pain and other symptoms. If the fungal infection can be used such as miconazole and other drugs, if the bacterial infection can be used such as cefixime, cefdinir and other drugs, if the viral infection can be used acyclovir and other drugs treatment. The baby’s diarrhea is recommended to go to the hospital in a timely manner, to clarify the cause of the disease, and active treatment. The above drugs need to be used under the guidance of a doctor.