Permanent urinary diversion by using tube cystostomy was evaluated for its efficacy in treatment of selected cases suffered from urine retention in experimental and clinically affected animals. Experimentally, urine retention was induced then urinary diversion was performed in six male goats and four bull calves. All animals were observed for five months after operation. Pre and post-operative ultrasonographic examination was conducted for technical evaluation. Clinically, urinary diversion was performed in 22 male goats and 25 bull calves. It is concluded that the permanent urinary diversion by using tube cystostomy appears to be effective and satisfactory for management of selected cases of urine retention in ruminants.