To prevent the generation of dragging in the outer/inner peripheral side of a disk brake pad even if a friction member is thin by forming a recess in one side surface of a back plate member and fixing a magnet surrounded with a non- magnetic material.

A magnet 10 has a shape identical to that of the pawl portion of a piston and a caliper, and a volume of 15 to 40% of the entire volume of a back plate 1. The depth of a recess 9 surrounded with a non-magnetic material 11 is set to a dimension having a thickness left for non-deformation of the back plate 1 during forming by heating and pressurizing, preferably 1/3 or lower of the thickness of the back plate 1. Further, preferably, it is deeper by 0.01 to 0.5 mm than a thickness including the magnet 10 and the non-magnetic material 11. A disk brake pad is provided by preforming a friction plastic material to have a fixed thickness, forming the recess in one side face of a back plate member 8, obtaining the back plate 1 by fixing the magnet 10 surrounded with the non-magnetic material 11, inserting the back plate 1 with the surface having the magnet 10 fixed thereto placed down, integrally molding these by heating and pressurizing after the pre-molded body and then polishing the surface.