Patients with hepatitis B are not allowed to donate blood. People who are carriers of hepatitis B belong to the group of hepatitis B patients, and they are also not allowed to donate blood. The difference between hepatitis B carriers and other hepatitis B patients is whether there is damage to liver function and whether there are signs of cirrhosis. Carrying means that there is only the virus present in the body, and there is no liver or body damage that can be visibly detected through liver function or liver ultrasound tests, etc. Hepatitis B virus carriers also have hepatitis B virus in their blood circulation. Having these hepatitis B viruses can lead to transmission, and such a person cannot donate blood. In addition to the fact that hepatitis B virus carriers cannot donate blood, the healed state of hepatitis B is also not very recommended for blood donation. There are some insidious hepatitis B, the hepatitis B five items will show a healed state, that is, 2, 4, 5 positive, this kind of people if the use of a particularly high sensitivity DNA test, but also can check the presence of DNA in the blood circulation. Therefore, in order to eliminate the transmission of hepatitis B through blood transfusion, the healed state of hepatitis B is also not recommended to donate blood.