Intelligent sensor is a sensor in addition to the basic function, zero, self calibration, self calibration and has the function of automatic adjustment, along with logic judgment and the ability of information processing, can be a measurement signal conditioning or signal processing. Multilayer BP neural network is a one-way transmission of feedforward network, and it uses the error output estimation error directly leading layer to output layer, and then the error estimation error of a layer. The paper proposes design of intelligent sensor based on BP neural network and ZigBee Wireless Sensor Network. Experiments show that the proposed intelligent sensor has higher efficiency