The baby’s stool is dry and then dilute may be due to gastrointestinal dysfunction, constipation and other reasons. 1. Gastrointestinal dysfunction: generally due to the autonomic dysfunction that governs intestinal motility, resulting in uncoordinated intestinal motility, intestinal peristalsis suddenly accelerated, so that feces move faster, mainly in the colon part of the feces, feces, the water in the feces has not yet had time to be absorbed, and then quickly pushed into the rectum, so that the rectum is quickly filled, and then the discharged feces will be dry and then dilute the situation. 2. constipation: generally due to food debris gathered in the baby’s intestinal tract for a long time, the front end of the stool is the first to form feces, feces contain water is the intestinal reabsorption bias, feces at the back end of the amount of water absorbed bias, will lead to dry stools after the thinning of the situation. The baby’s stool is dry and then dilute need to go to the hospital in time to confirm the diagnosis, under the guidance of the doctor’s instructions for standardized treatment, usually pay attention to drink more water, to ensure a good diet, eat less spicy and greasy food.