High-frequency filter

The utility model relates to a high-frequency filter, which comprises a bottom plate, a detachable winding framework and a protective cover, wherein the detachable winding framework is arranged above the bottom plate; the protective cover is arranged outside the winding framework; a coil body is arranged on the winding framework, and positioning grooves and clamping grooves are symmetrically formed in the two sides of the upper end face of the bottom plate and the inner side wall of the protective cover respectively. Positioning clamping blocks are symmetrically arranged on the two sides of the winding framework. The bottoms and the outer sides of the positioning clamping blocks are inserted into the corresponding positioning grooves and the corresponding clamping grooves in a matched mode respectively. Locking arc blocks are symmetrically arranged on the two sides of the upper end face of the bottom plate correspondingly. The bottom end face of the protective cover is provided with locking arc grooves corres