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In the process of laser gyro signal demodulation and filtering, Engineering often use higher-order FIR filter circuit to achieve jitter signal strip. However, this method, although high precision but with higher delay ,so the laser gyro output cannot meet real-time requirements. In order to solve this problem, proposed a laser gyro signal demodulation circuit based on FPGA, used adaptive filtering principle to strip laser gyro output jitter signal, finally, get on the corresponding accuracy and latency test. Experimental results show that laser gyro signal has a good shake effect after stripping of this system, laser gyro static output variance only three thousandths one hundred seconds and the system delay is 0.6 ms much lower than conventional systems 5 ms delay, meet the low-latency and high-precision on laser gyro system.