The invention discloses a parking locking device used in a vehicle transmission and a transmission utilizing same. The parking locking device comprises parking pawls, a pawl base used for mounting the parking pawls in a pivotal manner and a parking 
ratchet wheel, circumference of which is fixed on a power input shaft of the transmission to rotate along with the power input shaft, wherein the at least two parking pawls are arranged along the outer side of the circumference of the parking 
ratchet wheel, and one of the parking pawls is engaged with the parking 
ratchet wheel to form 
brake locking while the power input shaft is reversed; a pivotal end is formed at one end of each 
parking pawl, and an engaged end is formed at the other end of each 
parking pawl to abut against and fit to an outer gear ring of the parking ratchet wheel all the time. The parking locking device is suitable for preventing a vehicle from reversing; after power shutoff, a transmission shaft of the transmission can be effectively prevented from reversing or the vehicle can be effectively prevented from reversing while each pawl can form 
brake engage, or one pawl is instantly jointed with ratchet teeth of the parking ratchet wheel, so that the rotation 
stroke of the parking ratchet wheel is reduced; relatively great 
impact force is prevented from being generated when the pawls are jointed with ratchet teeth of the parking ratchet wheel, so that the parking pawls are prevented from being damaged; and meanwhile, the noises and the vibrations are reduced.