This season, diarrhea is more common in children, and after examination, most of them are found to be rotavirus diarrhea. Rotavirus diarrhea, common in the fall and winter, often manifests as egg-flake soup-like thin watery stools, which can easily cause dehydration. Rotavirus diarrhea is a self-limiting disease, and the virus usually remains in the body for 5-7 days, with no specific drug treatment. The main treatment is symptomatic support therapy to avoid dehydration and enhance body resistance. For the prevention and treatment of dehydration, oral rehydration salts are preferred, and only in severe cases intravenous fluids are needed to correct dehydration. Rotavirus causes diarrhea because the virus causes damage to the mucosa of the small intestine, leading to a decrease in the level of lactase in the mucosa of the small intestine, resulting in lactose intolerance and diarrhea. Therefore, if the child is on formula, he or she should switch to lactose-free formula until the diarrhea completely improves, and then use lactose-free formula for 1 to 2 weeks. Some people ask, “Can I use some anti-inflammatory drugs, that is, antibiotics, to speed up my child’s recovery, since he or she is pooped so much that it hurts to watch? The answer is no! Surprisingly, antibiotics don’t just not speed up recovery, they can aggravate diarrhea caused by lactose intolerance! Therefore, the use of any antimicrobial in children with rotavirus diarrhea should be prohibited unless they have a co-infection with bacteria! It is highly inappropriate to use broad-spectrum antimicrobials in such children without proof of co-infection with bacteria. As mentioned earlier, the most critical thing for rotavirus diarrhea is symptomatic support. The most important thing is parental care! Parents should take care of their baby’s little PP to avoid the red bottom caused by repeated diarrhea. Parents should also pay attention to the amount of urine, stool and water intake of their child! These are the keys to determine the severity of the child’s condition and whether medical intervention is needed! If parents notice that their child has not urinated for 6 to 8 hours (moderate dehydration) or vomits again after the vomiting has disappeared (possible intestinal obstruction), they should go to the hospital promptly and need intravenous rehydration. If the child urinates a lot and can be hydrated, rehydration can be carried out under the guidance of the doctor using prescribed oral rehydration salts to prevent aggravation of dehydration. Parents should also pay attention to reasonable feeding, with a starchy diet that is easy to digest. Breastfeeding is encouraged during the breastfeeding period, which can increase the frequency of breastfeeding and reduce the amount of breastfeeding each time, and salt and sugar can be added to the drinking water in appropriate amounts. Some people say that rotavirus diarrhea should stop breastfeeding, but that is completely unscientific! Most children will recover in less than a week after the above treatment and will not even need to go to the hospital at all. However, there is one situation where you must go to the hospital right away, and that is when your child is not urinating or is vomiting a lot.