In the structure of the jaw crusher, the effect of jaw plate wear often occurs, especially in the wear of a better third, dynamic and static jaw plate wear will lead to the crusher can not operate normally, lose the ability to break, the crusher work through the process, which is inevitable to reduce wear, wear will shorten the mechanical life, so minimize to reduce waste parts, One is the need to adhere to scientific choice of crusher; Second, rational use and material selection, this paper briefly introduces the causes and solutions of jaw crusher wear. Jaw crusher wear reasons 1, jaw and equipment surface smooth contact No. 2, eccentric shaft speed is too fast, the broken material has been eliminated, the crushing chamber blocked, jaw plate wear. 3. The material properties have changed, but the crusher has not been adjusted in time. 4, the Angle between the jaw and the fixed jaw plate is too large, beyond the normal range. 5 and the strength and wear resistance of the jaw plate against poor performance. Solution jaw crusher jaw plate must be fixed jaw tight, wear new clothes, and smooth surface contact. Better plastic material between the chin and the pad surface of the machine; Each batch of materials into the crusher sampling, once the material characteristics have a large change, should change the parameters of the crusher in time, so that it matches the material; The jaw plate must be made of materials with high hardness, wear resistance and resistance. Cement enterprises and mining crushing production lines, coarse crushing mines and cement can be finely interchanged to wear the same type of jaw, and the worn jaw can be repaired by surfacing welding. And it is noted that during the normal operation of the crusher, feeding can be performed; Materials should be evenly added to the crushing chamber, should avoid or provide materials, in order to prevent unilateral overload or bear overload, under normal circumstances, the bearing temperature rise does not exceed 35 ° C, not more than 70 ° C, such as more than 70 ° C, should immediately stop, find out the cause of elimination, before stopping, should stop charging work, wait for the crushing chamber to be broken after full discharge, you can turn off the motor, When broken, if the crushing chamber material caused by stopping is blocked, the engine should be turned off immediately, the material must be clear before starting again, after one end of the tooth plate is worn, the adjustable head is used.