The invention discloses a four-wheel drive coupler articulated steering carrier vehicle with a front and rear wheel differential lock. The four-wheel drive coupler articulated steering carrier vehicle with the front and rear wheel differential lock comprises a front frame, a rear frame, two front wheels and two rear wheels. An engine, a clutch, a safety bracket, a steering wheel, a radiator, an engine cover are mounted on the front frame. A compartment, a parking brake, two lifting oil cylinders are mounted on the rear frame. A combination gearbox is mounted on the front frame. The combination gearbox is combined by a transmission with a front axle differential lock and two-shaft type auxiliary box. A rear drive axle with a wet brake and a differential lock and frame roll-over stand assembly are mounted on the rear frame. An articulated steering mechanism is mounted between the front frame and the rear frame so that the drive section of the carrier vehicle is connected with the compartment. The four-wheel drive coupler articulated steering carrier vehicle with the front and rear wheel differential lock is high in quality, flexible in steering, high in climbing ability, high in self-disassembly efficiency, convenient to operate, reliable in safety, stable in performance, low in power consumption and reasonable in power distribution.