Baby physiological diarrhea is generally due to the imperfect development of children’s digestive system, the normal flora of the intestinal tract has not been established, improper feeding, or affected by the composition of breast milk, treatment can be divided into the following two aspects: 1, adjust the feeding: such as to reduce the content of lactose in the food, you can choose to replace breast milk soy milk or powdered sugar-free milk, but also add complementary foods to increase the nutrients to be symptomatic after the improvement of the gradual resumption of breastfeeding, ensure that Adequate nutritional intake, so as not to affect the growth and development; 2, adjust the mother’s diet: such as excessive intake of fat, protein, etc. will cause physiological diarrhea in babies, it is recommended to reduce the intake of high-protein, high-fat foods, to avoid eating cold and stimulating food, can eat more fiber-rich fruits and vegetables, such as apples, celery, etc., to maintain a relaxed mood, avoid fire, and so on. Physiological diarrhea, through the above treatment can slowly improve. If the symptoms do not improve, you can follow the doctor’s instructions to apply probiotic drugs, such as Bifidobacterium bifidum to regulate intestinal flora, intestinal mucosal protective agent montelukast to maintain intestinal function, digestive drugs, multi-enzyme tablets to improve the digestive function and so on. In addition, daily care should be strengthened, timely change of diapers, wash the buttocks and perineum with warm water, and apply tannic acid ointment, etc., so as not to cause redness of the buttock skin, resulting in local infection. If there is a sudden increase in the number of stools, increased moisture in the stools, and a foul odor, we should be alert to the occurrence of pathological diarrhea, and should go to the hospital for examination and active treatment.