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In order to save the collected and processed images and ensure the real-time and high-efficiency transmission images, a long-distance and high-efficiency transmission storage system is designed. The FPGA main control chip of the system is Cyclone IV E developed by Altera, and the transmission of image data through the UDP protocol in the Ethernet can be realized. First, the image data is collected through the camera OV5640; secondly, the collected image data is preprocessed, and then, the processed image is cached through SDRAM; finally, it is transmitted to the host computer through the network cable using the UDP transmission protocol. This method is suitable for the requirements of large data transmission volume, long transmission distance and high transmission efficiency. And it can save processed image data in real time, laying a foundation for subsequent processing.