Norovirus infection is generally not serious, but complications such as electrolyte disorders and dehydration are more serious. Norovirus is highly contagious, mainly through contact transmission, infection will cause acute gastroenteritis, mainly manifested as fever, nausea, vomiting, abdominal pain, diarrhea and other symptoms. Norovirus infection is a self-limiting disease, usually 2~3 days can be relieved on its own, but if the severe vomiting and diarrhea lead to electrolyte disorders and dehydration and other complications, there may be serious consequences if not treated in time. Suspected norovirus infection, mild symptoms can be supplemented with water and electrolytes, such as oral rehydration salts, oral probiotics to regulate intestinal flora, such as Bacillus subtilis dictyostelium granules, oral montelukast to protect the gastrointestinal mucosa. However, symptoms such as poor spirit, severe vomiting and oliguria should be treated in hospital promptly. If the above symptoms should be timely consultation, clear diagnosis and follow the doctor’s instructions to standardize the treatment.