Diarrhea is characterized by an increase in the frequency of a child's bowel movements and a change in the nature of the stool. When children have diarrhea, their stool can be watery, often caused by rotavirus infection resulting in seasonal diarrhea. The stool may resemble egg drop soup and can even be sprayed out. In such cases, it is recommended to administer montmorillonite powder and probiotics to the child, as well as to supplement with oral rehydration salts. For children with moderate to severe dehydration, intravenous rehydration is necessary to correct dehydration. Another scenario involves diarrhea caused by invasive bacterial infections in children, where the stool is also watery. Symptomatic treatment and correction of dehydration are required in such cases. If systemic bacterial infection symptoms are present, antibiotics should be administered under the guidance of a hospital doctor. This is mainly because the bacterial or viral invasion affects the intestinal mucosa, causing changes in osmotic pressure within the intestinal cavity, leading to the occurrence of watery stools. (Please use medications under the guidance of a doctor.)