Motion target detection and tracking has been widely applied in many fields. But due to the limitation of the embedded processor's speed, this application mostly concentrates on personal computers. This paper uses an improved texture-based algorithm for the background subtraction. The method is achieved with high-speed FPGA. After improving local binary pattern histogram-based algorithm, the algorithm becomes suitable for hardware implementation. In a hardware structure of the image block, the FPGA can process 12 image blocks simutaneously, which shows that the system's processing speed is greatly improved.