The invention discloses a direct-driving compressor of a movable magnet type, comprising a compression cavity, a piston, a piston shaft and a motor. The piston and the piston shaft are arranged in the compression cavity and driven by the motor to reciprocate in the compression cavity, the motor comprises a motor part and a stator part which are mutually matched, adopts a transversal magnetic circuit structure so that the motion directions of the magnetic circuit and the motor are in a perpendicular direction, and an inner stator and an outer stator of the motor can adopt the structures of an inner stator and an outer stator of a common rotary motor and are stacked along the axial direction. The direct-driving compressor of the movable magnet type has the advantages of convenient processing, higher efficiency, compacter structure, little magnetic resistance, smooth output curve, and the like and is very suitable to be used in the refrigeration field, especially suitable to be used as refrigeration compressor a refrigerator.