Diarrhea and dehydration in toddlers are mostly likely to be caused by improper feeding and indigestion. Young children with diarrhea and dehydration are less likely to have diarrhea only, with no other obvious symptoms. If diarrhea and dehydration are more severe, nausea, vomiting, depression or irritability, crying or even sunken eyes, and in severe cases, little or no urine. At this time, it is necessary to give the infant sufficient water and energy, and infusion therapy can be given to prevent dehydration and electrolyte disorders. Also pay attention to feeding more water to avoid dry air. In terms of feeding, it is important to feed the baby less and more to avoid overfeeding and overfed. At the same time, the baby can be given abdominal massage to promote gastrointestinal peristalsis to avoid constipation.