A male three years old monkey with clinical signs of, respiratory dyspnea, hemoptysis, cyanosis, anorexia, and diarrhea, referred to Department of small animal, school of veterinary medicine, Shahid Bahonar University of Kerman, in clinical examination respiratory rales in auscultation of respiratory sounds was heard in right and left cranial and caudal lobs of lung because of Bronchopulmonary infection. The diagnosis of pulmonary cysts was established with radiography. In Ventro-Dorsal and Lateral position of thoracic and peritoneal region an increase of opacity of lobular nodules was obvious in cranial and caudal lobes. There was a distention of stomach and intestine by gas. The case died because of severe respiratory dyspnea. In mortem examination of respiratory system diagnosis of pulmonary hydatid cyst confirmed by parasitological examination and detection of protoscolex in cyst.