Compound pendulum jaw crusher structure: the eccentric shaft, a large pulley, flywheel, moving jaw, side guards, elbow board, elbow board seat, adjust gap screw, spring return, the fixed jaw plate and the activities of the jaw plate etc., which bracket also play a role as insurance. Jaw crusher jaw plates is the use of two extrusion of material and bending, crushing or hardness of the material in a variety of pieces of broken machinery. The broken body from the fixed jaw plate and movable jaw plates, jaw plates close to the time when the two materials incurs broken jaw plate when the two left the mouth of the nesting material is less than a block from the bottom of the discharge. Motor-driven belt and pulley, the eccentric shaft so that the upper and lower jaw movement, jaw rises when moving the elbow angle between the plate and moving jaw bigger, thus promoting the moving jaw plate close to the fixed jaw plate, with the same time the material is crushed or split broken, broken to achieve the purpose; when moving the jaw down, the angle between toggle plate and moving jaw smaller, movable jaw plate in the bar, under the action of the spring, leaving the fixed jaw plate, this time crushing the material discharged from the crushing chamber, under the port . With the continuous rotation of the motor for the periodic motion of mobile jaw crusher crushing and waste material, to achieve mass production.