An all-terrain vehicle having straddle-style seating and handlebar steering, comprising: a frame; and a hybrid power system mounted to the frame, comprising: an engine; a continuously variable transmission, power being transferred between the continuously variable transmission and the engine; a first transmission, power being transferred between the first transmission and the continuously variable transmission; a first main speed reducer, power being transferred between the first main speed reducer and the first transmission; a first half shaft, power being transferred between the first half shaft and the first main speed reducer; a motor at least for outputting power; a second transmission, power being transferred between the second transmission and the motor; a second main speed reducer, power being transferred between the second main speed reducer and the second transmission; and a second half shaft, power being transferred between the second half shaft and the second main speed reducer, wherein one of the first half shaft and the second half shaft is a front half shaft, and the other of the first half shaft and the second half shaft is a rear half shaft, characterized in that the motor is in front of the engine along a front-rear direction of the all-terrain vehicle; the continuously variable transmission and the first transmission are arranged on the engine, and a first transmission shaft is coupled between the first transmission and the first main speed reducer; the continuously variable transmission and the first transmission are arranged on left and right sides of the engine; and the engine, the continuously variable transmission and the first transmission are in the middle of the frame along the front-rear direction and below a seating area of the all-terrain vehicle. a frame; and a hybrid power system mounted to the frame, comprising: an engine; a continuously variable transmission, power being transferred between the continuously variable transmission and the engine; a first transmission, power being transferred between the first transmission and the continuously variable transmission; a first main speed reducer, power being transferred between the first main speed reducer and the first transmission; a first half shaft, power being transferred between the first half shaft and the first main speed reducer; a motor at least for outputting power; a second transmission, power being transferred between the second transmission and the motor; a second main speed reducer, power being transferred between the second main speed reducer and the second transmission; and a second half shaft, power being transferred between the second half shaft and the second main speed reducer, wherein one of the first half shaft and the second half shaft is a front half shaft, and the other of the first half shaft and the second half shaft is a rear half shaft, an engine; a continuously variable transmission, power being transferred between the continuously variable transmission and the engine; a first transmission, power being transferred between the first transmission and the continuously variable transmission; a first main speed reducer, power being transferred between the first main speed reducer and the first transmission; a first half shaft, power being transferred between the first half shaft and the first main speed reducer; a motor at least for outputting power; a second transmission, power being transferred between the second transmission and the motor; a second main speed reducer, power being transferred between the second main speed reducer and the second transmission; and a second half shaft, power being transferred between the second half shaft and the second main speed reducer, wherein one of the first half shaft and the second half shaft is a front half shaft, and the other of the first half shaft and the second half shaft is a rear half shaft, characterized in that the motor is in front of the engine along a front-rear direction of the all-terrain vehicle; the continuously variable transmission and the first transmission are arranged on the engine, and a first transmission shaft is coupled between the first transmission and the first main speed reducer; the continuously variable transmission and the first transmission are arranged on left and right sides of the engine; and the engine, the continuously variable transmission and the first transmission are in the middle of the frame along the front-rear direction and below a seating area of the all-terrain vehicle.