Diabetes and tuberculosis are closely related because when the blood sugar of diabetic patients is not well controlled, physical exertion will lead to a decrease in resistance and they are very susceptible to tuberculosis. In recent years, the incidence of diabetes is increasing, and the incidence of tuberculosis is also increasing significantly, and many patients with tuberculosis are suffering from diabetes, so there is a close relationship between the two diseases. Regarding the treatment of patients with diabetes mellitus combined with tuberculosis, blood sugar control should be strengthened, and patients are advised to use insulin treatment, and tuberculosis treatment should be taken to a local infectious disease hospital or a specialized hospital for tuberculosis, and standard anti-tuberculosis treatment should be taken, and the standard protocol of anti-tuberculosis treatment should be carried out at the same time as insulin blood sugar control in order to achieve a better treatment effect.