The invention is a thick coal bed hydraulic shield support, able to implement synthetic mechanized mining of thick coal beds, comprising top beam, shield beam, seat, column, balancing jack, front link rod, rear link rod, displacive jack and operating valve set, where the top beam and shield beam are equipped with side push jacks, and long and short guide rods inside and equipped with side backplates and hinged mutually; the top and bottom ends of the balancing jack are equipped on the top beam and shield beam, respectively; the top and bottom ends of the column are arranged on the lower part of the top beam and the seat, respectively; the upper ends of the front and rear link rods are hinged at the rear end of the shield beam and the lower ends of them are hinged on the seat; the displacive jack is equipped on the seat; the operating valve set is equipped on the bottom surface of the top beam. And it has large height regulating range and high moving speed, and improves force bearing conditions of the support and prolongs the service life of the support. And the support is made of high-intensity low-alloy steel sheet, small- bulk and lightweight.