The core problem of switched reluctance motor (SRM) is the detection and suppression of vibration torque. The linear mathematical model of SRM is established, and the torque change of SRM is closely related to the phase winding current. In order to observe the current change and vibration torque of SRM, a simulation system of SRM is built and the vibration torque and current of SRM in three modes of angular position control (APC), current chopping control (CCC) and chopping voltage control (CVC) are simulated. The results show that the vibration torque with commutation frequency as the main frequency is very obvious. Meanwhile, an experimental platform for testing the vibration torque of SRM is set up, and the actual vibration torque of the motor is detected by angular acceleration sensor. The experimental results are analyzed and discussed.