The utility model discloses a brake block clamp spring structure matched with a brake caliper support and a brake block. The brake caliper support comprises a middle piece body, an upper piece body and a lower piece body which are installed in a groove of the brake caliper support, the upper piece body and the lower piece body are connected to the upper side edge and the lower side edge of the middle piece body in parallel, the upper piece body and the lower piece body are both vertically connected with the middle piece body, and the brake caliper support is characterized in that a third spring piece is arranged on the side of the middle piece body; the brake block is supported by the first spring piece to transversely slide, the second spring piece enables the clamp spring structure of the brake block and the support to be more stable and reliable and not prone to falling off, and the third spring piece enables the brake block to stably and transversely slide and meanwhile has returnforce. The brake block clamp spring structure is simple and practical, solves the problem that an existing conventional brake block clamp spring structure is not firm in fixation, enables the brake block to have certain restoring force when the brake block slides, accordingly reduces dragging moment of a product, and contributes to reduction of oil consumption of a whole vehicle.