Babies with yellowish-green stools with a sour smell are often associated with dietary factors, cold, indigestion or irregular diet. In this case, parents should promptly take the baby to consult a doctor to diagnose the cause and then take the appropriate program for conditioning. Common causes 1, cold: the baby’s environment is not the right temperature, parents did not keep the child warm in time, resulting in cold baby, it is easy to lead to abdominal pain, diarrhea symptoms, so that the discharge of stool is yellow-green and sour smell; 2, indigestion: baby gastrointestinal development is not perfect, due to improper addition of complementary foods or overfeeding, causing gastrointestinal maladjustment, resulting in gastrointestinal dysfunction, food is not digested, in the intestinal tract In the accumulation, there will be yellow-green stool, and emit a sour odor phenomenon; 3, improper diet: eating formula baby due to the amount of food, eating too many times, milk powder brewed too thick, or the mother’s diet is irregular, after eating cold, greasy, spicy food or stimulant drugs, breastfeeding baby, may also cause baby stool yellow-green and sour odor. Treatment 1, if the baby pulls yellow-green, sour-smelling stool due to indigestion, parents should give the child timely supplementation of intestinal probiotics under the guidance of the doctor to help regulate the balance of the flora; 2, if the baby has diarrhea, parents should pay attention to observe whether there is dehydration, timely supplementation of oral rehydration salts to the baby to prevent dehydration and electrolyte disorders. The breastfeeding mother should pay attention to her diet not to be too greasy, and eat more light, easy-to-digest food, which also helps to regulate the baby’s intestines and stomach; pay attention to the feeding of formula milk to the baby, the temperature and consistency of formula milk should be appropriate, and the bottles and teats used should be disinfected in a timely manner; parents should give the baby a massage under the guidance of a doctor to help promote digestion and spleen and stomach function.