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With the development of information and communication technology, the Wireless Sensor Network (WSN), which has the significant advantages of low power consumption, low cost, distributed architecture and self-organization, has been developed rapidly in many application fields. The application of the WSN in agriculture becomes the hot spot of the precision agriculture in recent years. In this paper, a monitoring system is presented to acquire the videos and images about the crop growth situation continuously in real-time. The system consists of the video camera, wireless bridge and the remote monitoring platform. A video camera and a wireless bridge could be integrated as the monitoring node deployed in the cropland, to collect the real-time video of the cropland and transmit the data to the sink. Because of the trade-off among the worst transmission environment, application requirements and the engineering implementation, the wireless bridge is utilized as the wireless transmission method of video to get a high performance. Sink node is deployed in the nearest place with the access of the Internet. Users can get the videos and images of the crop once their computers are accessed to the Internet. The whole system has been installed in Huantai country of Shandong province in China for more than one year, and the result of the practical experiment demonstrates that the video monitoring system could be operated reliably and stably in the whole growth period of the maize or wheat. If the bandwidth of Internet access is enough, the video of the camera can be viewed fluently. When bandwidth is not enough, the resolution of video could be lowered to guarantee the fluent video transmission. In some cases, when Internet access is not stable, the system is influenced and the video monitoring is interrupt temporarily. Once the Internet access recovers, the monitoring system could work normally.