The invention discloses a substrate integrated waveguide bandpass filter. The substrate integrated waveguide bandpass filter comprises a first metal layer, a dielectric layer and a second metal layer, wherein the first metal layer, the dielectric layer and the second metal layer are arranged in a stacked mode from top to bottom. The first metal layer comprises a first main transmission line, a second main transmission line, a first gradual transition line, a second gradual transition line and a first metal plate. The first metal plate comprises a first strip-shaped open pore, a second strip-shaped open pore, a third strip-shaped open pore, a fourth strip-shaped open pore, a fifth strip-shaped open pore, a first circular open pore and a second circular open pore. The dielectric layer comprises a dielectric substrate, a first plated-through hole, a second plated-through hole, a first plated slot, a second plated slot, a third plated slot, a fourth plated slot and a fifth plated slot. The second metal layer includes a virtual metal plate. The substrate integrated waveguide bandpass filter has the advantages that insertion loss caused by radiation is reduced, the limit on a machining technology is avoided, and therefore the substrate integrated filter can be applied to high-band filtering.