A vibration reduction apparatus of a hybrid vehicle includes a differential rotation detector configured to detect a difference between a rotational speed of an output shaft of a prime mover and a rotational speed of a second rotating shaft, and controller configured to control a driving part and an electric motor so as to switch an operation mode from a first mode where a torque of the prime mover is output to an electric motor and a third shaft to a second mode where torque of the prime mover and the electric motor is output to the third shaft, when the difference detected by the differential rotation detector in the first mode is within a predetermined range continuously for a predetermined time.