The invention relates to a wrist joint rehabilitation training device which comprises two parts, namely, a rehabilitation training executive device part and a mirror image autonomous input device part. The rehabilitation training executive device part comprises a base seat, a forearm sliding chute, a forearm sliding block, a forearm height adjusting rod, a forearm supporting plate, a wrist rotating sliding rail, a wrist rotating sliding block, a wrist rotating guiding wheel, a bracket, a wrist rotating angle sensor, a wrist rotating motor, a pull rope, a wrist rotating rod, a wrist swing rod, a wrist swing angle sensor, a wrist swing motor, a wrist deflection rod, a wrist deflection sensor and a wrist deflection motor. The mirror image autonomous input device part comprises no motor, and the other devices of the mirror image autonomous input device part are symmetrical with those of the rehabilitation training executive device part. The wrist joint rehabilitation training device has three freedom degrees of rotation, swing and deflection, can achieve all the motions of a wrist joint and the rehabilitation training of composite motions through wearing for one time, and enables a rehabilitation therapist to control the wrist of a patient to carry out rehabilitation training conveniently through the mirror image autonomous input device part.