Cattle are considered one of the most important pillars of animal production in most countries of the world. As it being a building block in their national security strategies;endeavoring them to increase this animal population by all possible means. During the last three decades;it was clear thatin vitro maturation, fertilization and culturing of bovine oocytes are the most important of these applications, which intended to improve this animal productivity and reproductivity. For that, the goals of this review are to discussthe different aspects of cattle oocyte maturation from the different angles.