Hepatitis B patients whose blood is wiped off are usually not very contagious. Hepatitis B is a relatively common infectious disease that may be transmitted through blood, for example, contact with the blood of a hepatitis B carrier who has a wound on his or her body may result in hepatitis B virus infection. However, if the blood of a hepatitis B carrier is dried in a timely manner and there is no wound site, direct contact is usually not contagious. In addition, hepatitis B patients are not necessarily highly contagious, if the patient’s condition is effectively controlled, the viral load is relatively low, the contagiousness is also relatively low, and after the blood is wiped off, it usually does not lead to infection. However, in order to avoid hepatitis B virus infection, should be timely vaccinated against hepatitis B, especially the patient’s family members should be timely vaccinated, and pay attention not to share personal items in daily life.