Rotavirus negative means that there is no rotavirus infection. If there is diarrhea, consider checking this test when there is a possibility that the diarrhea is caused by rotavirus infection. If there is no rotavirus infection, it is possible that there is some other common bacterial infection, and this is the time to consider routine medication based on whether there is dehydration. If there is no dehydration, it is also important to prevent excessive diarrhea, dehydration and electrolyte disturbances to ensure adequate water intake and proper sugar and salt intake. In the case of children, consider giving sugar and salt water, or putting salt or sugar inside the porridge when drinking to ensure sugar and salt intake.