Influenza B refers to influenza B. The disease requires isolation. Mild cases can be isolated at home and are self-limiting. Serious cases need to be hospitalized and treated by a doctor. Influenza B is a kind of influenza, which is an acute respiratory infectious disease caused by influenza B virus, and the contagiousness of this disease will continue to worsen, so patients with influenza B need to be isolated as soon as possible. Clinical studies have shown that Influenza B is self-limiting. Therefore, people with mild symptoms such as fever and headache can be isolated at home, and the disease can be cured or relieved in about 1 week. However, for patients with severe clinical symptoms or serious conditions such as bacterial upper respiratory tract infection, bronchitis, pneumonia, etc., they need to be hospitalized and isolated in time, and at the same time, they need to actively cooperate with the doctor to use antiviral medications such as oseltamivir, zanamivir, and so on. To summarize, the basic principles of early detection, early reporting, early treatment and early isolation should be adopted to prevent the spread of the virus.