Abstract: A cabinet has a positioning device including at least one locating device. Each locating device has a fastener, a fixture group, two slots and two first holes. The fastener has a side board and a bottom board forming an L-shape, and a notch is defined in the bottom board. The fixture group includes a bridge member and a lever, and the bridge member is connected with an arm. A hook is formed in the distal end of the arm, which can further hitch itself to the channel of the fastener. When the handle of the drawer is swayed outward by the user and the hook will escape from the channel, and the drawer will open.