Abstract: On the basis of CC2530 hardware of chip SOC,design proposal of Zigbee wireless sensor for coal preparation plant is given,in which design principle of radio frequency transmission circuit is explained as well as a method of energy conservation for fixed node is proposed,with traced position of mobile node based on location algorithm. Random repeated tests show that Zig Bee wireless sensor has been able to serve intelligent monitoring system of coal preparation plant well because of the feature of high-quality signal,low power consumption and good positioning.