Abstract: Filter in underwater acoustic fuze must be low power-consuming and fast decreasing in stop-band.A bandpass filter fit for underwater acoustic fuze is designed by using high performance dual switched capacitor filter LMF100.Two methods of designing the band-pass filter are used and compared by testing.Finally a band-pass filter with narrow transition band,accurately controllable cutoff frequency,great attenuation in stopband and low power consumption is successfully developed,and the debugging result of the developed circuit is given.