The invention relates to a conditioning ring driving mechanism for a driving grinding device. The conditioning ring driving mechanism comprises a base, a main shaft, a driving motor and the conditioning ring; the driving motor is arranged on the base; an output shaft of the driving motor is connected with the main shaft; the main shaft is in transmission connection with a first belt pulley and a swinging rack respectively; the main shaft is positioned at an eccentric position of a swinging center at one end of the swinging rack; the first belt pulley is in transmission connection with a second belt pulley through a transmission belt; the first belt pulley is arranged on an auxiliary shaft; a driving pinion is arranged on the auxiliary shaft; the driving pinion is meshed with a gearwheel; the gearwheel is fixedly connected with the conditioning ring; and the other end of the swinging rack is fixedly arranged on the auxiliary shaft. The invention provides the conditioning ring drive mechanism for the driving grinding device, which has actively driving and high grinding precision and reduced cost.