The research of this paper emphases on the following contents: according to the investigation of field condition monitoring system in practical application scene, based on EPC framework, systematic network framework is designed and perception layer of ZigBee sensing node is also designed. The sensing node should real-timely collect multiple important environment information which is related to agricultural production and perform controllable image acquisition on crop form. Then, various data are sent to Web server through gateway by means of wireless communication module to design Web server at application layer. Experimental tests show that the system prototype can accurately collect the field environment information. In addition, the data can be stored in agricultural environment monitoring center server. Remote user on internet can access server, coordinator and gateway through web browser, control the whole system, browse and download data. This system basically realizes low-energy-consumption as well as extensible design target and it can satisfy modern agricultural environment monitoring requirement.