The preventive measures of hepatitis in children mainly include measures to cut off the transmission pathway such as keeping away from infectious sources and paying attention to hygiene, and protective measures such as vaccination. 1. Keep away from infectious sources: the infectious sources of hepatitis are mainly hepatitis patients and virus carriers, and children should avoid contact. 2. Cut off the transmission route: it is necessary to strengthen the supervision and management of childcare units and other service industries, and strictly sterilize the tableware used by children. At the same time, it is necessary to pay attention to personal hygiene, develop good habits, if contact with the patient, wash their hands with soap and running water in a timely manner. 3. Protective measures: Hepatitis B vaccination is available. If exposed to hepatitis B virus, hepatitis B immunoglobulin injection can be performed as appropriate for passive immunization. If there is any discomfort, one should go to the hospital for consultation and treatment.