The invention discloses a four-tuning passive filter. The four-tuning passive filter comprises a series resonance branch circuit consisting of an LC series branch circuit and a parallel resonance branch circuit consisting of three LC parallel branch circuits. The four branch circuits are serially connected to form the four-tuning passive filter, and a plurality of groups of single-tuning filters can be replaced, so that the floor occupation is reduced, and switches are saved. The invention further provides a parameter design method, and a specific solution is given out for the implementation of the four-tuning passive filter.