The use of prolene mesh in repair of inguinal hernia becomes most popular type of repair nowadays. PROLENE HERNIA SYSTEM is one of the prolene mesh with unique characters that favoured its use, however, the presence of the connector between the onlay patch and underlay patch, attracted the attention to study its effect on testicular perfusion and function.Our study based on twenty patients with unilateral primary inguinal hernia, all underwent hernioplasty using prolene hernia system. Testicular perfuison scan was done preopratively and three months postoperatively. Only one case showed ischemic changes in the testis postoperatively.