For 8-month-old babies with watery stools, the first step in the treatment plan is general supportive therapy, which requires temporary feeding of the baby with a light, easily digestible, liquid diet, without fruits, vegetables or high-fiber foods that will stimulate the baby’s bowel movements. The normal diet can be gradually resumed only after the stools have returned to normal for 1 week. At the same time, sufficient water and electrolytes need to be replenished to prevent dehydration and electrolyte and acid-base imbalance. For symptomatic treatment, intestinal microecological preparations such as Saccharomyces boulardii or Clostridium typhimurium can be used to regulate the intestinal flora, and montelukast can be taken to astringent and antidiarrheal. For those with active intestinal motility, 654-2 can be used to relieve spasm. The pathogen causing watery stool in babies is intestinal virus, and antiviral therapy can be administered with influnine injection.