Abstract: The temperature change of knitting needles during quenching in the mesh-belt furnace was simulated using the ANSYS software.The results show that the internal temperature of the knitting needles was not uniform,and the temperature of the hook part rose faster than that of the middle part.Moreover,the velocity of the mesh-belt exerted a great influence on the temperature distribution curve.The temperature difference of the internal part became bigger and bigger in the earlier heating stage and the holding time became shorter and shorter in the later heating stage as the velocity of the mesh-belt increased.Based on the results,the technology parameters of the needle quenching in the mesh-belt furnace were adjusted.