There is no diabetes vaccine to prevent diabetes. Diabetes is a chronic disease, mainly due to the body’s pancreatic islet function is impaired, insulin resistance and other reasons, resulting in absolute or relative insulin insufficiency, blood glucose uncontrolled and elevated. At present, there is no vaccine that can prevent diabetes. Vaccines mainly use toxoid or inactivated, attenuated bacteria, viruses and other pathogenic microorganisms to produce antigens, which are used to stimulate the body’s immune system to produce specific antibodies against a certain bacteria or viruses, so as to avoid the infection of the relevant infectious diseases. For example, Hepatitis B vaccine prevents Hepatitis B, and DPT prevents whooping cough, diphtheria and tetanus. There is no specific way to prevent diabetes. The incidence of diabetes can be reduced by maintaining healthy eating habits, adhering to exercise, controlling body weight, staying optimistic, and adhering to regular work and rest habits. If diabetes is suspected, it is important to seek timely hospitalization and treatment under the guidance of a doctor.