A motor operated valve comprising: a body (200, 220, 240, 260) including an inflow port (222, 262) through which fluid is introduced from an upstream side, an outflow port (224, 264) through which the fluid is delivered to a downstream side, and a passage through which the inflow port (222, 262) and the outflow port (224, 264) communicate with each other; a valve element configured to open and close a valve section provided on the passage; a motor including a rotor configured to drive the valve element in opening and closing directions of the valve section; a feed screw mechanism configured to convert rotational movement of the rotor into translational movement; and a stopper mechanism configured to restrict the translational movement of the rotor, wherein the feed screw mechanism includes: a guiding member mounted vertically on the body (200, 240), and including an external thread portion on an outer surface thereof; and a rotation shaft (326, 325, 352) of the rotor made of a cylindrical member, including an internal thread portion on an inner surface thereof, and mounted around and thus supported by the guiding member, the internal thread portion being engaged with the external thread portion, the stopper mechanism includes: a stopper portion (327, 800, 350, 840) provided on the rotation shaft (326, 325, 352); and a stopping face formed integrally with the guiding member, the stopper portion having a contact face, the contact face coming in contact with the stopping face, when the valve element is driven by the motor to move in a valve closing direction, the stopping face stops the stopper portion (327, 800, 350, 840) to restrict the movement of the rotor in the valve closing direction; characterized in that the guiding member and the rotation shaft (325, 326, 352) are each made of a metal material by cutting, the guiding member is constituted by a single piece, the external thread portion and the stopping face thereof being formed integrally with the guiding member, the rotation shaft (325, 326, 352) is constituted by a single piece, the internal thread portion and the stopper portion thereof being formed integrally with the rotation shaft (325, 326, 352). a body (200, 220, 240, 260) including an inflow port (222, 262) through which fluid is introduced from an upstream side, an outflow port (224, 264) through which the fluid is delivered to a downstream side, and a passage through which the inflow port (222, 262) and the outflow port (224, 264) communicate with each other; a valve element configured to open and close a valve section provided on the passage; a motor including a rotor configured to drive the valve element in opening and closing directions of the valve section; a feed screw mechanism configured to convert rotational movement of the rotor into translational movement; and a stopper mechanism configured to restrict the translational movement of the rotor, wherein the feed screw mechanism includes: a guiding member mounted vertically on the body (200, 240), and including an external thread portion on an outer surface thereof; and a rotation shaft (326, 325, 352) of the rotor made of a cylindrical member, including an internal thread portion on an inner surface thereof, and mounted around and thus supported by the guiding member, the internal thread portion being engaged with the external thread portion, the stopper mechanism includes: a stopper portion (327, 800, 350, 840) provided on the rotation shaft (326, 325, 352); and a stopping face formed integrally with the guiding member, the stopper portion having a contact face, the contact face coming in contact with the stopping face, when the valve element is driven by the motor to move in a valve closing direction, the stopping face stops the stopper portion (327, 800, 350, 840) to restrict the movement of the rotor in the valve closing direction; characterized in that the guiding member and the rotation shaft (325, 326, 352) are each made of a metal material by cutting, the guiding member is constituted by a single piece, the external thread portion and the stopping face thereof being formed integrally with the guiding member, the rotation shaft (325, 326, 352) is constituted by a single piece, the internal thread portion and the stopper portion thereof being formed integrally with the rotation shaft (325, 326, 352). a stopper portion (327, 800, 350, 840) provided on the rotation shaft (326, 325, 352); and a stopping face formed integrally with the guiding member, the stopper portion having a contact face, the contact face coming in contact with the stopping face, when the valve element is driven by the motor to move in a valve closing direction, the stopping face stops the stopper portion (327, 800, 350, 840) to restrict the movement of the rotor in the valve closing direction; characterized in that the guiding member and the rotation shaft (325, 326, 352) are each made of a metal material by cutting, the guiding member is constituted by a single piece, the external thread portion and the stopping face thereof being formed integrally with the guiding member, the rotation shaft (325, 326, 352) is constituted by a single piece, the internal thread portion and the stopper portion thereof being formed integrally with the rotation shaft (325, 326, 352).