Based on surface acoustic wave (SAW) filter technology, a miniaturized component with high stop-band suppression has been developed using methods such as two-stage filter cascade, filter surround switch, and multi-channel anti-interference layout. The experimental results indicate that the developed multi-channel filtering component has a size of 18 mm×15 mm×5 mm, with -3 dB bandwidth of greater than 48 MHz, insertion loss of less than 7 dB, in-band amplitude fluctuation of less than 1.5 dB, and near-end stop-band suppression of greater than 70 dBc. It has good practicality.