Eating with a hepatitis B patient may share dishes, even if the patient’s hepatitis B virus is not effectively controlled and the blood contains a high concentration of hepatitis B virus, the amount of hepatitis B virus contained in the patient’s saliva is less, so generally sharing dishes will not cause the transmission and spread of hepatitis B virus. Hepatitis B virus is mainly transmitted through the following ways: 1, mother-to-child transmission: the mother’s body has hepatitis B virus, may pass the virus to the child through the blood, umbilical cord; 2, blood products transmission: may be blood transfusion or medical operation, contaminated with hepatitis B virus blood, lacerated hands may cause medical blood transmission; 3, sexual contact transmission: if the body of hepatitis B patients contain high hepatitis B virus replication, body fluids may cause sexual partners to be infected with hepatitis B. Hepatitis B virus is not saliva transmission, and whether the hepatitis B patient will cause hepatitis B virus transmission, to clarify the HBV-DNA, that is, whether the hepatitis B virus replication, if the virus is well controlled, it is not infectious. It also depends on whether the people who eat together have been vaccinated against hepatitis B. If they themselves have hepatitis B antibodies, they are also immune to the hepatitis B virus.