The invention discloses a magnetic-adjustable dual-mode bandpass filter, and belongs to the field of microwaves and millimeter waves. The filter comprises a dielectric substrate and two metal layers,wherein the two metal layers are arranged on an upper surface and a lower surface of the dielectric substrate, the two metal layers are connected by a metal through hole array, the dielectric substrate, the two metal layers and the metal through hole array form a dual-mode resonant cavity, four through holes are formed in the dual-mode resonant cavity and are in close contact with parts around themetal through hole array, and ferrites are arranged in the through holes. With the adoption of the dual-mode resonant cavity, the circuit area of the filter is reduced, and the magnetic-adjustable dual-mode bandpass filter has the advantages of low insertion loss, good selectivity, good harmonic suppression and the like; with the application of the ferrites, the resonant frequency of the dual-mode resonant cavity is changed, and the coupling strength between two degenerate modes also can be controlled; and the working frequency of the filter moves towards a high-frequency direction with the increase of the intensity of an external bias magnetic field, the dynamic adjustable range is wide, and the bandwidth flexibility design can be achieved.