Last decade, there have been important improvements about tuberculosis (Tbc) in the world. Today, 32% of world populations are infected by Tbc basil’s, every year about 9 million people have been catching Tbc. We have purposed to determine the incidence of Tbc and the factors affect it, using rate of bacteriology in diagnosis, rate of treatment completion and to constitute an idea for innovation. Diyarbakır, standard monthly data forms used for informing of Tbc in tuberculosis control dispensary are investigated retrospectively among 1996-2004. The mean incidence of yearly Tbc is 37.77/100.000 and pulmonary Tbc is 30.11/100.000. In this period have been determined 3724 new Tbc patient; 2969 (79.7%) are pulmonary Tbc and 755 (20.3%) extrapulmonary Tbc. 842 patient (22.6%) of pulmonary Tbc are smear positive. Tbc pleurisy is the most common type of extrapulmonary Tbc in our series. 3354 (90.1%) of whole patients and 2624 (88.4%) with pulmonary Tbc had completed treatment. There is no data about the rate of cure. This is the most common problem Tbc control system. In 2005, cure rates will have been determined by the way of new form. 162 (4.4%) patient had abandoned treatment. Incidence of Tbc is higher than the incidence of Turkey. It was considered that at the first place highly growing population, the crowded family pattern sharing the same house and bad socioeconomic factors have been playing a major role. Furthermore, it was found that the rate of bacteriological diagnosis was low. In order to increasing of this rates should be carried out necessary studies, should be tried to diagnose all patients with bacteriological methods. End of the treatment cure should be tried to demonstrate by way of examination of sputum. The treatment process should be pursued by directly observed treatment strategy.