The movable jaw is suspended on the mandrel and can swing left and right. When the eccentric shaft rotates, the connecting rod reciprocates up and down, driving the two thrust plates to reciprocate, thereby pushing the movable jaw to reciprocate left and right to realize crushing and discharging. This type of crusher uses a crank double-link mechanism. In addition, when this kind of crusher is working, the movement trajectory of each point on the movable jaw is a circular arc centered on the mandrel, and the radius of the arc is equal to the distance from the point to the center of the shaft. The simple pendulum jaw crusher has a compact and simple structure, and the transmission parts such as the eccentric shaft are less stressed. Due to the small vertical displacement of the movable jaw, there is less excessive crushing of the material during processing, and the wear of the movable jaw plate is small.