The invention discloses a transmission system and a vehicle with the same. The transmission system comprises a transmission input shaft, a transmission output shaft, a transmission gear set, a differential gear set, a differential, driving half shafts, a parking ratchet and a parking mechanism; the transmission input shaft is connected with the transmission output shaft through the transmission gear set; the transmission output shaft is connected with the differential through the differential gear set; the driving half shafts are arranged on two sides of the differential; the driving half shaft positioned on the side, towards the input shaft, of the differential is inserted in the transmission input shaft, and is coaxially arranged with the transmission input shaft; the differential, the transmission output shaft and the transmission gear set surround arrangement space; the parking ratchet is arranged on the transmission output shaft; and the parking mechanism is arranged in the arrangement space. The transmission system is compact in structure, can achieve the space utilization optimization, and is high in efficiency and wider in application range.