The invention discloses a four-band microstrip band-pass filter with notch characteristics and a design method thereof. The four-band microstrip band-pass filter with notch characteristics includes aconductor band, a dielectric substrate, and a circuit board of a grounding board. The circuit board is provided with a short-hole perforation. The conductor band includes an input port, an output port, a feeder line, two first stepped impedance resonators, two second stepped impedance resonators, and two F-type open-circuit branches, wherein the feeder line is connected between the input port andthe output port; the two first stepped impedance resonators are connected to the upper end portion of the feeder line; the two second stepped impedance resonators are connected to the lower end portion of the feeder line; the two F-type open-circuit branches are connected to the upper end portion of the feeder line; and the first stepped impedance resonator is located between the two F-type open-circuit branches. The four-band microstrip band-pass filter has notch characteristics, can realize band-pass filtering of four frequency bands simultaneously, and has a simple structure, small size, high integration, excellent performance, and good compatibility.