The utility model discloses a four-link steering device, which is capable of realizing steering by 0-180 degrees so as to realize various vehicular steering modes and adapt to narrow site operation requirements. The four-link steering device comprises a steering hydraulic cylinder, an arc steering arm, a rotary shaft, a slewing bearing arm, a steering shaft and a push rod. The steering hydraulic cylinder is hinged to a hydraulic cylinder seat, a piston rod of the steering hydraulic cylinder, one end of the arc steering arm and one end of the push rod are hinged to a point, the other end of the arc steering arm is hinged to a frame through the rotary shaft, the other end of the push rod is hinged to the slewing bearing arm which is connected with the steering shaft, the steering shaft is fixedly connected with a wheel support, and a steering wheel is mounted on the wheel support. The four-link steering device enables wheels to realize steering by 0-180 degrees so as to meet the steering requirement of various vehicular steering modes, and the four-link steering device is high in adaptability to narrow site operation.