In order to improve the degree of automation and reduce labor intensity in the rice noodles processing, designed the coat-hanger die of rice noodles wire extruding machine to solve rice crowded uneven wire speed problem in the process of silk.Based on the flow basic assumptions, volume flow equation and the flow balance equation is derived to calculate hangers type main part of the structure of the Coat-Hanger Die size. Considering the rice noodle is a natural polymer material, adjusting mechanism and the heating system is designed. The Coat-Hanger Die realize the crowded wire velocity uniformity by using the tears manifold distribution function, regulator to adjust flow channel section and the heating system change rice physical parameters. The results showed that the Coat-Hanger Die improves the uniformity of the wire speed and that the RV value reduced to below 5%,which is in good accordance with the designing requirement.