Neocoronavirus vaccine has no effect on the joints, and the main reason for joint discomfort is self-inflicted. The main components of the new crown vaccine include inactivated new crown virus, recombinant proteins, adenovirus vectors, etc., and there are no components that can directly affect the structure and tissues of the joints; in addition, the main effect of the new crown vaccine occurs in the immune system by stimulating the immune system to produce antibodies, which is not related to the joints. Fever, rash and other discomforts may occur after vaccination, but they do not have much effect on the joints. Therefore, if joint discomfort occurs after the New Crown vaccination, it is mainly considered to be caused by self-inflicted factors. This includes dislocation, fracture, joint capsule laxity, etc. It is necessary to consult a doctor for X-rays and other examinations to clarify the cause of the disease and then take treatment such as surgery, subject to the doctor’s opinion.