Hepatitis B is contagious, and the contagiousness of hepatitis B is relatively strong and harmful to the patient’s body, usually through blood transmission, mother-to-child transmission or sexual transmission routes. If you are diagnosed with hepatitis B, you should undergo antiviral treatment in a timely manner and go to the hospital regularly to review your condition and observe the changes. Although hepatitis B major tri-positive has a certain degree of contagiousness, but in ordinary life the chances of normal contact infection is relatively low, so the contact can be through the injection of hepatitis B vaccine, patients can properly participate in sports training to enhance their resistance, usually develop good hygiene habits.