If patients with diabetes combined with tuberculosis receive regular treatment in a timely manner, the patient’s life expectancy will not be greatly affected, that is to say, these two diseases will not have a direct impact on the patient’s life. The main reason is that both diabetes and tuberculosis can be treated with effective medications, such as oral hypoglycemic drugs or insulin for diabetes, and there is a very standard oral treatment program for tuberculosis, which can be cured after one and a half to two years of regular treatment. Diabetes can be cured after one and a half to two years of regular treatment, and the blood glucose will be stabilized after appropriate treatment. Therefore, patients with diabetes combined with tuberculosis, as long as the treatment is appropriate, will not have a great impact on the quality of life and life expectancy.