An apparatus for producing a fiber-reinforced strand produced by causing a reinforced fiber bundle to pass through a resin bath means storing a molten thermoplastic resin and twisting the reinforced fiber bundle after resin impregnation about a bundle center by a twisting means provided downstream of the resin bath means , wherein the apparatus comprises the resin bath means including a resin impregnation region where the reinforced fiber bundle is impregnated with the thermoplastic resin and a twisting region where the reinforced fiber bundle after the resin impregnation region can be twisted by the twisting means , the twisting means arranged downstream of the resin bath means , wherein the twisting means is adapted to twist the fiber-reinforced strand , and a twisting means handling means adapted to handle the twisting means to make the twisting means twist the reinforced fiber bundle to produce the fiber-reinforced strand in such a manner that a twist imparted to the reinforced fiber bundle in the twisting region satisfies: L 3 ≥ P ≥ 3.15 90 dtex where dtex: decitex of reinforced fibers, decitex meaning a weight in gram of the reinforced fiber bundle per 10 000 m, L: length (in mm) of the twisting region of the resin bath means , wherein the twisting region is a region between a most downstream impregnation roll of a plurality of impregnation rolls arranged rotatably in the resin bath means and a die for shaping the thermoplastic resin covering the reinforced fiber bundle to form a cross-sectional shape, wherein the die is provided in an exit portion of the resin bath means , wherein at the exit portion the reinforced fiber bundle after resin impregnation is pulled out to outside, P: twist pitch (in mm) imparted to the reinforced fiber bundle , a twist pitch of 300 mm meaning that a strand is twisted one turn while 0.3 m of the strand is taken up. the apparatus comprises the resin bath means including a resin impregnation region where the reinforced fiber bundle is impregnated with the thermoplastic resin and a twisting region where the reinforced fiber bundle after the resin impregnation region can be twisted by the twisting means , the twisting means arranged downstream of the resin bath means , wherein the twisting means is adapted to twist the fiber-reinforced strand , and a twisting means handling means adapted to handle the twisting means to make the twisting means twist the reinforced fiber bundle to produce the fiber-reinforced strand in such a manner that a twist imparted to the reinforced fiber bundle in the twisting region satisfies: L 3 ≥ P ≥ 3.15 90 dtex where dtex: decitex of reinforced fibers, decitex meaning a weight in gram of the reinforced fiber bundle per 10 000 m, L: length (in mm) of the twisting region of the resin bath means , wherein the twisting region is a region between a most downstream impregnation roll of a plurality of impregnation rolls arranged rotatably in the resin bath means and a die for shaping the thermoplastic resin covering the reinforced fiber bundle to form a cross-sectional shape, wherein the die is provided in an exit portion of the resin bath means , wherein at the exit portion the reinforced fiber bundle after resin impregnation is pulled out to outside, P: twist pitch (in mm) imparted to the reinforced fiber bundle , a twist pitch of 300 mm meaning that a strand is twisted one turn while 0.3 m of the strand is taken up. <EOS>