Hepatitis B 5 of 145, that is, hepatitis B virus surface antigen, hepatitis B virus e antibody, hepatitis B virus core antibody, all three positive have the possibility of infecting family members. Hepatitis B 145 positive, also known as minor triple positive, is the state of hepatitis B infection, infectious. The strength of its infectiousness should be combined with the expression level of hepatitis B virus DNA to determine. The higher value of hepatitis B DNA represents the more replication of hepatitis B virus, which also suggests that hepatitis B virus is more contagious. Hepatitis B virus is mainly transmitted through blood, sex and mother-to-child transmission. Therefore, eating together, shaking hands, hugging and sharing towels among family members are not contagious. Care should be taken to avoid sharing toothbrushes, razors, etc. between family members so that there will not be breaks in transmission through blood. Most importantly, family members need to complete the Hepatitis B five tests to find out if they have Hepatitis B surface antibodies, if not, they need to receive Hepatitis B vaccine as soon as possible, so that the body can produce Hepatitis B antibodies to protect themselves. Family members of hepatitis B patients need to visit the hospital, complete the hepatitis B related tests and follow the doctor’s instructions.