Abstract: An object orientation device includes a shaking stand and a slide provided on the shaking stand; the slide includes a sliding groove and a retaining member on the sliding groove. A retaining member is parallel to and extends along a sliding direction, and has a retaining surface parallel to a side wall of the sliding groove. The retaining surface and the side wall form an orientation space which is parallel to the sliding direction. After asymmetric objects are on the slide and shaken by the shaking stand, each object has a first end restricted into the orientation space, and has a seat orientation and moves towards a predetermined direction. Such object orientation device allows objects to be aligned in the slide and have consistent seat orientations; a printing equipment can print on the same position of each object. Additionally, a system and a method of orientation and printing are provided.