This article presents the results of the researchon clinical-diagnostic properties of diabetes mellitus. Diabetes and tuberculosis are that diseases which have more connection with death around the world. People who have tuberculosis more suffer from diabetes mellitus. As known, diabetes inhibits the immunological response, which contributes to the development of infectious diseases, including infection with tuberculosis mycobacteria [18].Tuberculosis is the third leading cause of death among infection diseases, whereas among non infection diseases diabetes is one of the most important [12]. The relationship between diabetes and tuberculosis has already been the subject of many studies, but at the same time, the relationship between these two diseases remains not fully understood.