The main components of infant probiotics are Lactobacillus and Bifidobacterium, which have the effects of body regulation, collective defense, disease prevention and treatment. Probiotics mainly refer to intestinal probiotics, and common probiotics for infants include Bifidobacterium bifidum live bacterial powder and Bacillus licheniformis live bacterial granules. Among them, Bifidobacterium bifidum is suitable for intestinal dysfunction caused by intestinal flora imbalance, such as acute and chronic diarrhea, constipation and so on. Bacillus licheniformis Live Bacteria can be used for acute and chronic enteritis and diarrhea caused by bacteria or fungi. Probiotics for infants can change the balance of intestinal flora by inhibiting the reproduction of harmful bacteria, and exert the effects of body regulation, collective defense, prevention and treatment of diseases on the host through antioxidant effect and physiological active effect. Baby probiotics need to pay attention to the temperature when brewing, brewed probiotic preparation should be taken in time, so as not to affect the effect of probiotics. In addition, if there is no bloating, diarrhea, indigestion or other factors that disrupt the balance of intestinal flora, infants and young children generally do not need to consume excessive amounts of additional probiotic preparations. Probiotics for infants are prescription medications and are recommended to be used in accordance with medical advice. Parents should not blindly self-medicate their infants to avoid serious adverse effects.