The invention discloses an adjustable hanger hook which comprises a columnar hanger hook body and a hook. The adjustable hanger hook is characterized by further comprising an annular connecting sleeve arranged on the circumferential surface of the hanger hook body in a sleeved mode; the connecting sleeve can slide in the axial direction of the hanger hook body and can also rotate around the shaft axis of the connecting sleeve; the hook is fixedly connected to the connecting sleeve, the inner side of the connecting sleeve is connected with a bump through a spring, and the circumferential surface of the hanger hook body is further axially provided with a plurality of grooves used for containing the bump in a clamped-in mode. According to the adjustable hanger hook, the hook can be movable and can also be fixed; when the position of the hook needs to be adjusted, the connecting sleeve can be slid around the axis of the hanger hook body, and then the position of the hook can be adjusted; when the hook needs to be fixed, the connecting sleeve can be rotated along the shaft axis so that the bump on the hook can be clamped into the grooves, and then the hook is fixed. In this way, the adjustable hanger hook is low in cost, simple in structure and convenient to operate.