The invention belongs to the technical field of auto part testing, and relates to an IBS motor torque test bench. The IBS motor torque test bench comprises a bottom plate, a drive base plate, a sensor base plate and a test base plate for fixing an IBS motor. The drive base plate, the sensor base plate and the test base plate are disposed vertically on the bottom plate in sequence. A drive motor is fixed on the drive base plate. A torque sensor is fixed on the sensor base plate. The drive motor, the torque sensor and the IBS motor are connected coaxially in sequence. The invention can determine whether the performance of the IBS motor reaches the requirement by representing the maximum value and variation of the torque using the torque sensor.