In this paper, the authors focuses on the weakening or eliminating low frequency dynamic load of vehicle dynamic weighing, improve the efficiency and accuracy of dynamic weighing system, weighing the purpose of. Wireless Sensor Network (WSN) is deployed in the monitoring region of sensor nodes; the nodes achieve interconnectivity through wireless communication protocol, the network system structure. Usually, information without knowing the corresponding node position, often meaningless, positioning plays a very important role in many applications of Wireless Sensor Network (WSN). Based on dynamic load model, load WSN-WIM system design, signal processing, in-depth research of sensor fault diagnosis. Methods to investigate the dynamic load processing based on WSN.