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The current field monitoring is mainly physical data and lack of multimedia data. A remote monitoring system of crop environment and growing was designed based on WMSN. Firstly, the advantages of the proposed system were analyzed. Then, the key parts of the hardware circuit of Hi3512 and CC2430 and software systems were designed. The key issues of fusion of the crop physical environment and multimedia growing information were resolved. Finally, the temperature and humidity, light intensity, and four channel video signal in different monitoring points in the four greenhouses were monitored dynamically. The results show that the environment of the crop growing remote monitoring system is stable and accurate. Multimedia data acquisition, H.264 compression, 3G transmission, display on PC could be achieved, together with ZigBee networking including temperature, humidity and light intensity sensor nodes.