Corn oil is a pale-yellow drying or semidrying edible oil extracted from the germ of corn and used for cooking and salad preparation. Corn oil is finding wide application at home, restaurants, hotels, hospitals, and other food industries. Nowadays it is finding wide application at all places of food preparation. The principal goal of this study was to investigate the role of corn oil on the fertility, levels of some hormone, elements, and biochemical parameters of adult male rabbits. Fifteen adult male rabbits were randomly distributed into three groups, 5 animals of each groups: Group (1) was given orally distilled water and another groups (2 and 3) of rabbits were treated orally with 2 and 2.5 ml/day of corn oil alone as vehicle. The results show that corn oil caused significant differences (P>0.05) in sperm parameters and insignificant differences (P<0.05) in levels of some Hormone, some trace element, and some biochemical parameters of male rabbits. It was concluded that the addition of corn oil may improve semen quality of any animal, mammals as well as human being.