Abstract: To improve the accuracy of acoustic logging data acquisition, a FIR filter that can implement in FPGA was designed through the using of MATLAB. According to the data characteristics of acoustic logging, Hanning window was selected to design the filter. The filter coefficients were quantized following the FPGA’s characteristics . The simulation analysis shows that the signal can improve SNR 6dB.The test result on actual acoustic logging data after hardware implementation shows that the SNR is obviously improved. This method can also be used as the front-end processing of data compression and extraction.