Vaccination does not usually cause hair loss; hair loss is usually related to its own causes. Vaccination does not usually cause hair loss. Vaccines usually contain inactivated viruses, recombinant proteins and other ingredients, and do not contain substances that can directly affect hair. In addition, after vaccination, the main role in the immune system, stimulate the immune system to produce antibodies, to achieve the role of disease prevention, there is no direct impact on the surface of the body hair. Hair loss is mainly considered to be due to its own reasons, such as heredity, mental stress, malnutrition, hypothyroidism, etc., which can cause hair loss. It is recommended to consult a doctor for a comprehensive examination under the guidance of the doctor, and follow the doctor’s instructions for treatment at the same time.