The invention provides a door stop, and belongs to the technical field of electric-assisted tools. The door stop comprises a door stop body, wherein the front end surface of the door stop body is provided with a sliding chute in sliding connection with a cabinet door of a power transformation cabinet, and the side face of the door stop body is provided with blocking parts used for preventing the cabinet door from closing. According to the door stop, by means of the door stop body provided with the sliding chute, the sliding chute is matched with one side of the cabinet door of the power transformation cabinet, and the two side faces of the door stop body are provided with the blocking parts used for stopping the cabinet door of the power transformation cabinet from closing, so that after the cabinet door of the power transformation cabinet is opened by an operator, the sliding chute and the cabinet door of the power transformation cabinet are directly installed in a matched manner without bending or crouching of the operator, the door stop falls to the ground along the two side faces of the cabinet door of the power transformation cabinet, and the cabinet door of the power transformation cabinet is prevented from being automatically closed under the action of the blocking parts. The device is convenient to install, even if the ground is uneven, the door stop can still be used when a common door stop in a gap between the cabinet door of the power transformation cabinet and the ground cannot be used, and the effect of preventing the cabinet door of the power transformation cabinet from being automatically closed is achieved.