The utility model discloses a AMT hydraulic gear shifting actuating mechanism with voltage limiting locate function, including the valve body, be provided with a plurality of piston holes on the valve body, install a gear shifting pull rod in every piston hole, be provided with first oil pocket and second oil pocket between every gear shifting pull rod's both ends and the valve body, gear shifting pull rod's positioning end passes first oil pocket and connects organic tool centering positioner, installs position sensor on the valve body, be provided with the interlock between the gear shifting pull rod, machinery centering positioner installs voltage limiting positioner and mechanical centering device through positioning shaft connected including installing the end cover on the valve body in proper order in, through each gear shifting pull rod's of electromagnetism ratio pressure reducing valve control work, adopt voltage limiting positioner, each interlocking that keeps off location of position and keep off the interdigit of mechanical interlock realization, through position sensor detect gear shifting pull rod's well bit position, can realize the control and the execution works of a plurality of fender positions, have higher control accuracy and shift gears the reliability.