Having antibodies to Hepatitis B does not protect against Hepatitis C. It only fights the Hepatitis B virus. Hepatitis C antibodies are produced after being infected by the hepatitis C virus and have no protective effect. Hepatitis B antibody belongs to protective antibody, hepatitis B vaccine can stimulate the human immune system to produce antibodies against hepatitis B virus, to a certain extent, it can effectively neutralize the infectious force of hepatitis B virus, and then achieve the purpose of protecting the human body from the infection of this virus, and play a certain preventive role, but can not protect the human body against hepatitis C virus. For hepatitis C, when the human body is infected by hepatitis C virus, it will produce a kind of specific antibody, that is, antibody to hepatitis C virus, but it does not have any protective effect, instead, it is a sign of hepatitis C virus infection. Therefore, patients with viral hepatitis C do not produce protective antibodies and can get sick again after recovery. In conclusion, it is necessary to strengthen the screening for hepatitis C, take good personal protection, pay attention to daily life management, and have medical checkups on time.