The invention discloses a direct-drive pumping unit of a permanent-magnet disk-type motor. The direct-drive pumping unit comprises a frame, a permanent-magnet disk-type servo motor, a brake, a synchronous pulley, a drive shaft, a drive wheel base, a guide pulley, a pulley base, an opening synchronous belt and the like. The permanent-magnet disk-type servo motor is adopted as a power source; a motor output shaft is the drive shaft and directly drives the synchronous pulley in key connection with the motor output shaft to rotate positively and reversely; the synchronous pulley also pulls the opening synchronous belt meshed with the synchronous pulley to move in a reciprocating manner, and the two ends of the opening synchronous belt are connected with a plurality of steel wire ropes. The direct-drive pumping unit of the permanent-magnet disk-type motor, disclosed by the invention, has the beneficial effects that: a transmission system is very simple without a middle retarding mechanism; the direct-drive pumping unit is directly driven and reversed by the permanent-magnet disk-type servo motor with excellent governing performance and is matched with a servo speed control system, in addition, a weight box is adopted for performing direct balancing, so that the pumping unit has the advantages of long stroke, low jig frequency, high efficiency, low power consumption, easy adjustment of parameters, simple structure, convenience in operation and the like.