Whether vaccinations are allowed during pregnancy preparation depends on the type of vaccine and the physical condition of the woman during pregnancy preparation. Generally speaking, it is recommended to consult a professional doctor before vaccination and to go for vaccination after consultation. Common live inactivated vaccines, such as hepatitis B vaccine and diphtheria, do not have harmful effects on a woman’s body or her fetus and can be given during pregnancy preparation. However, live attenuated vaccines contain less virulent pathogens with potential pathogenic risks, such as polio vaccine and flu vaccine, which need to be given at a certain interval from the time of conception to prevent pregnancy before the active ingredients of the vaccine are completely metabolized from the body, which may have adverse effects on the fetus. As a rule, vaccinations during pregnancy preparation should be planned in advance and should be done carefully under the guidance of a doctor. For example, if a pregnant woman has not had chickenpox, it is recommended that she receive the chickenpox vaccine under medical supervision, and the best time to receive it is 3-6 months before conception. However, there are also some vaccines that can be given even during pregnancy, such as the flu vaccine. In addition, if during the preparation for pregnancy, there is a risk of infection with viruses that are strongly pathogenic and latent, such as rabies virus, this is a situation where the appropriate vaccine must be given to prevent the occurrence of the disease. The new coronavirus vaccine can be decided after consulting with relevant professionals and taking into account your own situation. In addition, women with a history of miscarriage should not receive any vaccine during pregnancy preparation.