The invention discloses a friction-type tapping chuck which comprises a housing, a core shaft, a first friction plate, a second friction plate and a threaded cover, wherein the housing comprises a bottom plate and a first sleeve; the bottom plate is positioned at the left end part of the first sleeve; a square chuck is arranged on the bottom plate; the first friction plate is detachably connected with the bottom plate; the first sleeve is an outer threaded pipe; the threaded cover comprises a second sleeve pipe and a baffle; the second sleeve pipe is an inner threaded pipe matched with the first sleeve pipe; a plurality of supporting rods are uniformly distributed on the baffle; a through hole is formed in the middle of the baffle; the diameter of a clamping part is smaller than that of the through hole; an expanding sleeve hole and a threaded hole are formed in the right end of the clamping part; an expanding sleeve is mounted in the expanding sleeve hole; a plurality of spherical recesses are formed in the first friction plate; a plurality of bulges matched with the recesses on the first friction plate are arranged on the second friction plate. According to the tapping chuck, the deficiencies of easy breakageand complicated replacement of a screw tap during tapping in the prior art are overcome.