Conventional tuberculosis treatment cycle is 6-9 months, and the treatment cycle is relatively prolonged in diabetic patients with combined tuberculosis. Because diabetic patients have lower immunity, after suffering from tuberculosis, the lung lesions tend to be more numerous and severe, and the lesions are not only confined to the usual sites of tuberculosis, but may cause multiple atypical lesions in both lungs. Usually the best treatment cycle for patients with diabetes mellitus combined with tuberculosis is 1 year, in order to get good treatment effect, patients need to pay attention to the following aspects: 1, active control of blood glucose; 2, according to the effective dietary counseling of diabetes mellitus to help treat tuberculosis; 3, regular treatment of tuberculosis. If the patient is combined with drug resistance, the treatment cycle should reach 18-24 months, and the intensive period of treatment for such patients is not only satisfied with 2-3 months, but can be extended to 6 months.