An anti-scouring packer comprises an unpacking joint, an unpacking ring, a connecting joint, a stopping ring, an upper taper 5, a slip, a leaf spring, a slip cover, a lower taper, an upper pressing cap, a setting pin, a piston, an upper limit ring, a lower limit ring, a locking block, a spindle, a pressure transmitting inner sleeve, a pressure transmitting sleeve, a locking ring, a rubber cylinder protecting cover, a sliding joint, a rubber cylinder and a lower joint, wherein the spindle is mounted and connected between the interior of the unpacking joint and the interior of the lower joint; the unpacking ring, the connecting joint, the upper taper, the slip, the slip cover, the lower taper, the upper pressing cap, the piston, a hydraulic sleeve, the pressure transmitting inner sleeve, the pressure transmitting sleeve, the rubber cylinder protecting cover, the sliding joint and the rubber cylinder are sequentially mounted on and connected with the outer side of the spindle. The anti-scouring packer has the characteristics that eccentric wear damage is not prone to occur when normal-circulation mud displacement or reverse-circulation large-displacement backwashing is performed in a straight well, an inclined well or a horizontal well, and when the rubber cylinder passes through an inclined well section, setting cannot appear in advance during scraping on the well wall; a single hydraulic cylinder structure is adopted, the anti-scouring capacity is high, the service life of the rubber cylinder is long, and the like, therefore, the packer is widely applied to downhole operation processes for oil exploitation.