Electric valve

Provided is an electrically operated valve having excellent flow rate controllability. An electrically operated valve (10) is provided with: a valve body (24) having a valve chamber (24C) having a valve seat (24A) formed at the bottom thereof, a first opening (24A1), and a second opening (24B1); a valve body (24D) which rotates in the valve chamber and controls the opening/closing state of a flow path between the first opening and the second opening; a cylindrical housing (12) joined to the valve body and having a bottom (12A); a stator (14) provided on the outside of the housing; a support member (16) provided on one side of the bottom inside the housing; a transmission shaft (18), one end of which is supported by the support member and the other end of which extends in the axial direction of the housing; a rotor (20) provided inside the housing; the driving shaft (22) drives the valve core to rotate; a speed reduction device (21) for reducing the speed of the rotation of the rotor and outputting the rotatio