Rotavirus infection can cause diarrhea. Rotavirus infection is an acute gastrointestinal disease caused by rotavirus, which is mainly transmitted through the fecal-oral route. Clinical manifestations are related to the severity of the disease, with mild diarrhea in mild cases and sudden onset of severe cases, which may be characterized by drainage-like stools, white stools, frequent bowel movements, accompanied by vomiting, fever and other symptoms. Due to repeated diarrhea, vomiting, can cause dehydration, electrolyte disorders, etc., if the condition is not well controlled, may further develop intussusception, gastrointestinal bleeding, acute enteritis and other complications. Patients with fever should use timely cooling measures, take antipyretic drugs as prescribed by the doctor if necessary, and supplement water and electrolytes under the guidance of the doctor to prevent dehydration, which can be oral rehydration salts or intravenous rehydration. Patients who are tested for rotavirus infection should further consult their doctor for treatment under his/her supervision.