Cochlear-based channelizer has a wide range of applications in modern communication system. Using the quasi-lumped element, an effective miniaturization design is proposed for the low impedance line in circuit, which is aimed at reducing the size of cochlear-based channelizer further. A 10 channels cochlear-based channelizer with 18% constant fractional bandwidth is designed，which works at 200 MHz-1 000 MHz. The simulation and test results indicate this miniaturization method makes the size of cochlear-based channelizer to be reduced to 137 mm×116 mm.