To provide the manufacturing method of a dielectric filter, having superior productivity.

A plurality of dielectric filters 1 are brought close on the same plane, so that the pad forming parts on the sides area adjacent; the respective pad-forming parts are irradiated with laser beams, and outer conductors 7 are cut by a prescribed engraved pattern; and thus a plurality of input/output pads 6 are formed simultaneously and partitioned, in a series of the engraved patterns.