Pediatric rotavirus infection often occurs in autumn, so it is also called pediatric autumn diarrhea, while common diarrhea can occur in any season without a typical peak incidence period. In addition, there are certain differences in the causes, performance and prognosis of the two, which can be distinguished mainly from the following aspects: 1. Causes: Pediatric rotavirus infection is due to the invasion of rotavirus into the body. The common diarrhea is mostly due to cold in the abdomen or improper diet, and the causative agents are mostly Escherichia coli, Salmonella, etc.; 2, performance: diarrhea caused by pediatric rotavirus infection, the nature of the stool is a large amount of yellow watery stool, as the virus invasion is often accompanied by fever symptoms, the presence of rotavirus in the stool can be transmitted to other people through the fecal-oral route. In contrast, ordinary diarrhea is generally characterized by watery stools, mostly accompanied by mucus or bloody secretions, which are not contagious. Patients often have symptoms of water-electrolyte disorders, such as reduced urine volume and mental distress, due to greater water loss in the body; 3. Prognosis: diarrhea caused by pediatric rotavirus infection is self-limiting and can gradually heal on its own within a few days. The self-healing time of common diarrhea is relatively faster, and most of them can improve significantly on the same day or the next day. If the diarrhea is not relieved for a long time and the stool is yellowish, the initial consideration is pediatric rotavirus infection, the family can urge the child to drink an appropriate amount of water, and if necessary, go to the hospital for treatment, mainly based on rehydration and symptomatic treatment.