Disclosed is an optical image stabilizer for use with a camera lens assembly. The optical image stabilizer including a fixable substrate; a movable substrate movably disposed on the fixable substrate, a fixable comb structure fixed on the fixable substrate and disposed on the movable substrate, and a movable comb structure disposed on the movable substrate and capable of moving on the fixable substrate with the movable substrate, wherein the movable substrate is moved by an attraction force acting between the fixable comb structure and the movable comb structure, when an electromotive force is applied to the fixable comb structure and the movable comb structure. In the optical image stabilizer, the movable substrate on which an image sensor is disposed and the elements for moving the movable substrate are manufactured using MEMS technology, thereby facilitating downsizing of optical image stabilizers and improving the precision of products.