The invention discloses a dual-bandpass filter based on an asymmetric short circuit stub loaded resonator. The dual-bandpass filter includes a micro-strip medium substrate 1, a metal earth plate 2, a resonator 3, a feeder line 4, a ground hole 5, an input port 6 and an output port 7. The micro-strip medium substrate 1 uses dual-surface copper-clad plate. The lower surface of the dual-surface copper-clad plate is the metal earth plate 2. The upper surface of the dual-surface copper-clad plate is provided with the ground hole 5 and an asymmetric short circuit stub loaded resonator. According to the invention, the dual-bandpass filter has increased current path and lower resonant frequency by using a folded asymmetric short circuit stub loaded resonator, and has a compactly-structured resonator and a size-reduced filter by using one ground hole. According to the invention, when a first resonant frequency of the asymmetric short circuit stub loaded resonator is suppressed, transmission zeros are introduced to 2 sides of a bandpass and the number of the transmission zeros can be adjusted through the source-load coupling strength so as to improve out-of-band rejection.