They are revised the clinical and diagnostic manifestations of tuberculous peritonitis. For this, it is provided our experience in three cases: 2 women and 1 man with ages between 49 and 79 years old. The more frequent clinical manifestations were general syndrome and ascites in all the cases (100%) and fever in 2 (66%). The mantoux was positive in two cases. The peritoneal fluid presented lymphocytic exudate and determination of adenosine deaminase increased in all the cases. The diagnosis was performed through laparoscopy with peritoneal biopsy with presence of necrotic granulomas. Only in 1 case,is identified growth of Mycobacterium tuberculosis in peritoneal fluid. All the patients answered positively to the specific treatment.