One spouse with diabetes is not contagious to the other. Diabetes is a clinical disease caused by a combination of genetic and environmental factors, rather than an infectious disease. At present, the etiology and pathogenesis of diabetes are not completely clear. It is generally recognized that genetic factors and environmental factors are involved in the development of diabetes. Genetic factors involve multiple genes, environmental factors include viral infections, chemical toxins, dietary factors, etc. Autoimmune abnormalities are also one of the important causes. Although diabetes is not a contagious disease, there is a certain genetic susceptibility, couples will not infect each other, but children may have an increased risk of developing diabetes compared to normal people. In addition, diabetes has a long course and can involve all organs of the body in the later stages, so it is recommended that diabetic patients actively cooperate with the treatment to slow down the progression of the disease.