The invention provides a valve plug type high-pressure common rail injector, mainly comprising an injector body, a high-speed electromagnet, a two-position two-way switch ball valve, a pin valve component and a middle cushion block component. The valve plug type high-pressure common rail injector provided by the invention has simple structure and greatly reduces the number of elements. The influence of the bending deflection of a hydraulic tappet on the fuel oil injection property is eliminated due to the absence of the hydraulic tappet and a valve housing thereof. A plurality of clearance gap seal existing in the prior BOSCH injector do not exist in the invention, thereby greatly reducing the leakage of the high pressure fuel and more easily establishing the high pressure in the injector. The high pressure or the supervoltage fuel injection is realized to satisfy the requirements of much more stringent emission regulations of a diesel engine.