A papermaking screen device for separating a foreign material from a papermaking raw material, comprising: a casing; a cylindrical screen inside the casing; a first chamber and a second chamber divided by the cylindrical screen inside the casing; a papermaking-raw-material supply passage having a supply opening end facing the first chamber to supply the papermaking raw material to the first chamber; a finely-selected-papermaking-raw-material discharge passage having a discharge opening end facing the second chamber to discharge a finely selected papermaking raw material having passed through the screen into the second chamber to an outside of the casing; a foreign-material discharge passage having a foreign material discharge opening end facing the first chamber to discharge a papermaking raw material including a foreign material which cannot pass through the screen in the first chamber to the outside of the casing; a rotor having an approximately columnar shape, disposed inside the screen, and including a stirring member stirring the papermaking raw material on an outside surface (62, 63) of the rotor facing the screen; characterized by an end-portion-side stirring member (62, 63) attached to a top face of the rotor and positioned to face an inside of the cylindrical screen to stir the papermaking raw material; a stirring-member one-side disintegration portion (62A, 63A, 62B) provided on an outer periphery of the end-portion-side stirring member (62, 63) facing the inside of the cylindrical screen; and a screen other-side disintegration portion (21, 22) provided in a portion of the screen facing the stirring-member one-side disintegration portion (62A, 63A, 62B), wherein the screen other-side disintegration portion (21, 22) and the stirring-member one-side disintegration portion (62A, 62A, 63B) work together to disintegrate the papermaking raw material. a casing; a cylindrical screen inside the casing; a first chamber and a second chamber divided by the cylindrical screen inside the casing; a papermaking-raw-material supply passage having a supply opening end facing the first chamber to supply the papermaking raw material to the first chamber; a finely-selected-papermaking-raw-material discharge passage having a discharge opening end facing the second chamber to discharge a finely selected papermaking raw material having passed through the screen into the second chamber to an outside of the casing; a foreign-material discharge passage having a foreign material discharge opening end facing the first chamber to discharge a papermaking raw material including a foreign material which cannot pass through the screen in the first chamber to the outside of the casing; a rotor having an approximately columnar shape, disposed inside the screen, and including a stirring member stirring the papermaking raw material on an outside surface (62, 63) of the rotor facing the screen; characterized by an end-portion-side stirring member (62, 63) attached to a top face of the rotor and positioned to face an inside of the cylindrical screen to stir the papermaking raw material; a stirring-member one-side disintegration portion (62A, 63A, 62B) provided on an outer periphery of the end-portion-side stirring member (62, 63) facing the inside of the cylindrical screen; and a screen other-side disintegration portion (21, 22) provided in a portion of the screen facing the stirring-member one-side disintegration portion (62A, 63A, 62B), wherein the screen other-side disintegration portion (21, 22) and the stirring-member one-side disintegration portion (62A, 62A, 63B) work together to disintegrate the papermaking raw material.