The invention discloses a controllable whirling device for a centrifugal pump. The controllable whirling device comprises a whirling box (10) arranged on a pedestal (19), a main shaft (1), an eccentric inner sleeve (3) and an eccentric outer sleeve (11), wherein both the eccentric inner sleeve (3) and the eccentric outer sleeve (11) are eccentric cylinders; the main shaft (1), the eccentric innersleeve (3) and the eccentric outer sleeve (11) are sequentially sleeved in the whirling box (10) from inside to outside; the eccentric outer sleeve (11) is provided with a driving gear (2) for driving the eccentric inner sleeve (3) to rotate; the outer surface of the eccentric outer sleeve (11) is provided with a synchronous belt pulley (25); the left end face of the eccentric inner sleeve (3) isprovided with a positioning groove (21); a gear shaft of the driving gear (2) is positioned in the positioning groove (21); and the eccentric inner sleeve (3) and the eccentric outer sleeve (11) are mutually fixed by means of a positioning device. The controllable whirling device can accurately set the eccentric magnitude of the rotating shaft and randomly set the required whirling ratio at a constant rotation speed of the main shaft.