Background: Tuberculosis is a highly contagious infectious disease caused by mycobacterium tuberculosis. This disease is mostly recognized as a pulmonary disorder but it can be transmitted to other parts of the body by blood. The most common extra pulmonary sites, including lymph nodes, abdomen, pleura, and abdominal tuberculosis, are less common than pulmonary tuberculosis. Given the importance of tuberculosis, a rare case of tuberculosis was reported. Case Report: A 13-year-old girl was admitted to Afzalipour hospital, Kerman, because of fever and abdominal pain. Her fever started from two weeks ago and generalized abdominal pain started a week ago. Ultrasound and abdominal CT scan showed fluid accumulation in the abdominal cavity. The result of chronic granuloma pathology was reported in favor of mycobacterium tuberculosis, and PCR test of pleural tuberculosis was positive. She was treated empirically with Isoniazid, Rifampin, Ethambutol, and Pyrazinamide. She was visited a month later. Her general condition was good and the clinical symptoms disappeared.