Brucellosis can affect almost all organ systems in humans. Digestive symptoms have been reported in several series. Brucella infection is a chronic systemic disease, particularly in which there is reticuloendotelial system involvement. It can cause rarely hepatitis, cholecystitis or pancreatitis in the gastrointestinal tractus. Brucella infection can rarely cause spontaneous bacterial peritonitis. Although a variety of clinical presentations and complications involving various organ systems has been reported, peritoneal involvement is a very rare presentation. There has been no reported case of massive chylothorax in a cirrhotic patient due to brucellosis in the literature. This report presents a case of spontaneous bacterial peritonitis and chylothorax caused by Brucella melitensis.