Baby exhaust stinks with the following reasons have a lot to do with: 1, mainly baby gastrointestinal tract development is not perfect, indigestion triggered by the baby may be younger, gastrointestinal colonies development is not perfect, so can not be well absorbed in the food nutrients will produce accumulation of food, will trigger the symptom of exhaust odor. 2, the child resistance is low, if the indoor temperature is too low it is easy to catch a cold, can also cause the symptoms of the 3, may be the baby usually drink less water, especially in the dry indoor environment, if the baby drink less water will lead to feces retained in the body for too long, and ultimately lead to constipation symptoms, so the exhaust will be very stinky. 4, if the baby is in the period of breastfeeding, the baby mother to consume too much greasy, high-protein food may also lead to the symptoms.