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Digital image real-time display plays an important role in military and civil field, synchronous implementation VGA display after the data captured by the camera have a great research value. In order to facilitate the existing project target recognition and tracking system debugging, and then to monitor the location of the object information, studied the image acquisition and real-time display, and design the video acquisition and display system based on FPGA. First of all, the hardware has been selected and the hardware platform has been built, analysis of each module and write the driver, then the SDRAM controller is designed, improved the existing ping-pong operation, and complete the data interaction across the clock by using the FIFO, it ensure the continuity of data flow. The experimental results show that use the ping-pong operation, can eliminates theSimage blur caused by the clock out of syncSwhen switchingStwo frames, and ensure the image real-time display integrated.