The invention discloses a compound force field gradient intensification centrifugal ore separator and belongs to the field of compound force field centrifugal separation equipment. According to the compound force field gradient intensification centrifugal ore separator, a separation rotating drum is mainly formed by an upper rotating drum and a lower rotating drum, and slurry is fed into a fed material distributor rotating along with the upper rotating drum and uniformly distributed to the wall face for flow film separation; when particles enter a cycle ring, radial pulsation is achieved underthe effect of back flushing water, and the particles are pushed to be loosened and forced to be layered; and by means of variable division pieces arranged at heavy product discharging openings, the division positions of light products and heavy products can be adjusted in an adjustment bed layer, the heavy products are discharged continuously, and the light products are tossed out through centrifugal force and enter the lower rotating drum for re-separation through a flow guiding part. Due to the fact that the upper rotating drum and the lower rotating drum are different in centrifugal force,the lower rotating drum is used for conducting relative fine particle separation, continuous discharging and gradient intensification separation, in the compound force field separation process, of the particles can be achieved, and separation precision is improved; and in addition, two types of products, namely concentrate and tailings or three types of products, namely the concentrate, middlingsand the tailings, can be separated through the ore separator.