The invention discloses an accelerated rolling bearing fatigue life tester, which comprises a test head part (2), of which the inside is provided with a test bearing (1), a transmission gear (3), a loading mechanism (4) and a control system, wherein the transmission gear (3), the loading mechanism (4) and the control system are arranged outside the test head part (2); and the loading mechanism (4) is connected with the test head part (2) through a hydraulic piping to load the test bearing. The tester is characterized in that: the transmission gear is a reversible hydraulic motor; the transmission gear (3) is connected with the test bearing (1) to drive the test bearing to rotate reciprocally; and the outside of the test head part (2) is provided with a torque sensor (5) for monitoring the torque of the test bearing, and the control system receives information of the torque sensor and controls the loading mechanism (4) and the transmission gear (3) to stop according to the information. The tester has high testing accuracy and more reliable life testing result.