The invention provides a uniform storage cabinet tailing discharging device. The uniform storage cabinet tailing discharging device is of a three-layer folded type frame structure composed of a fixed frame, a movable frame and a turnover frame. The fixed frame is arranged above a discharging opening of a storage cabinet. The movable frame is arranged on the fixed frame and slides in a reciprocating manner in the material conveying direction. The front face of the turnover frame is provided with a material baffle. A linear sliding rail is arranged on the back face of the turnover frame. A sliding block which is driven by a lifting air cylinder to slide up and down along the linear sliding rail is arranged inside the linear sliding rail. The front end of the movable frame is hinged to the sliding block. An overturning ejection cylinder is arranged between the back end of the movable frame and the turnover frame. The uniform storage cabinet tailing discharging device can achieve the purposes of rapidly reaching the right position, rapidly retreating and synchronously following the tailing discharging process through an automatic control component and a mechanical execution component.