The invention discloses a slide-bar punching positioning device. The slide-bar punching positioning device comprises a controlling, fixing and adjusting mechanism and two slide bars which are arranged on the controlling, fixing and adjusting mechanism and are hinged together, wherein the top of the controlling, fixing and adjusting mechanism is provided with a first punching positioning hole; one end of each slide bar is in hinged connection with the controlling, fixing and adjusting mechanism; the other end of each slide bar is provided with a second punching positioning hole (32) and a second punching positioning hole (33). The slide-bar punching positioning device has the beneficial effects that a technical scheme in which the slide bars are hinged to the controlling, fixing and adjusting mechanism and are telescopic in lengths is adopted, so that the punching positioning device is suitable for positioning common symmetric triangular holes; the device is easy to manufacture, is low in cost, is small in size, and is convenient to carry; punching positioning can be provided for different types of equipment rapidly and efficiently, and the device is wide in application range and is generally applied to the installation and application occasions of power terminals.