The utility model discloses a multistage hydraulic compresses packer, including the center tube, seal to separate the mechanism and the multistage hydraulic link gear of the hydraulic pressure linkage unit that loops through threaded connection including the multiunit, every group hydraulic pressure linkage unit is all including cylinder liner and the piston of suit on the center tube in proper order, and cylinder liner lower part inner diameter of through hole is greater than cylinder liner upper portion inner diameter of through hole, makes the piston be located the cylinder liner inboard and fix at the center tube, be equipped with the pressure space between piston top and the cylinder liner, cylinder liner bore and the sealed laminating of center tube outer wall, inner surface of the piston and outer wall seal the laminating with center tube outer wall and cylinder liner bore respectively, make the pressure space form an enclosure space, this multistage hydraulic compresses packer includes many hydraulic pressure linkage unit for the packer can be followed the upper end and dismantled step by step, has eliminated the breakout tongs and has probably beaten the technological hidden danger that influences piston and cylinder liner sealing performance on sealed face, can repeat repetitious usage behind the maintenance, has effectively avoided the wasting of resources, has reduced operation construction cost.