Pneumonia vaccine and hepatitis B vaccine at the same time are generally not recommended. Pneumonia vaccine is a class of biological agents mainly used for pneumonia caused by pneumococcal infection, and the pneumonia vaccine used in China is mainly the pneumonia polysaccharide vaccine and the pneumonia conjugate vaccine. Hepatitis B, on the other hand, is a vaccine used to prevent viral hepatitis B. The two vaccines are generally not recommended to be given at the same time. It is generally not recommended that both vaccines be given at the same time because some people may experience some vaccine reactions after receiving either the pneumonia vaccine or the hepatitis B vaccine. To be able to recognize or differentiate suspected adverse reactions caused by the vaccines, it is not recommended to receive both vaccines at the same time and a period of time should be spaced out. Pneumonia vaccine is a dead vaccine and Hepatitis B vaccine is a genetically engineered vaccine, so there is no need to be overly concerned if you have received both vaccines at the same time, as they generally do not cause serious adverse effects. Individuals, whether they are vaccinated with pneumonia vaccine or hepatitis B vaccine, need to closely observe the changes in their body after vaccination, and consult a doctor in time if there is any abnormal and serious adverse reaction.