The invention provides a folding type half-mode substrate integrated waveguide broadband band-pass filter, relates to a filter, particularly relates to the folding type half-mode substrate integrated waveguide broadband band-pass filter, and aims at solving problems that common substrate integrated waveguide band-pass filters are high in working frequency and narrow in bandwidth. The folding type half-mode substrate integrated waveguide broadband band-pass filter comprises a dielectric substrate, an upper metal layer, a lower metal layer, a front surface first microstrip line, a front surface second microstrip line, a back surface first microstrip line, two front surface first metal embedding blocks, two front surface second metal embedding blocks, two front surface third metal embedding blocks, two back surface first metal embedding blocks, two back surface second metal embedding blocks and two back surface third metal embedding blocks. The upper metal layer and the lower metal layer are respectively printed on the front surface and the back surface of the dielectric substrate. The dielectric substrate is composed of a rectangular plate and a semicircular plate. The right end of the rectangular plate and the vertical side of the semicircular plate are connected as a whole. The front surface first microstrip line is rectangular. The folding type half-mode substrate integrated waveguide broadband band-pass filter is used for the field of wireless communication.