Clinical head-mounted magnifier

The utility model discloses a clinical head-mounted magnifier, which belongs to the technical field of medical auxiliary instruments and comprises a supporting plate, a movable box is fixedly connected to the side face of the supporting plate, a motor is fixedly connected to the side face of the movable box, and an output shaft of the motor penetrates through the side face of the movable box and is fixedly connected with a bidirectional threaded rod. And the other end of the two-way threaded rod is rotationally arranged in a bearing embedded in the inner wall of the movable box in a penetrating manner through a rotating shaft. The device has the beneficial effects that a movable rod is pulled through a first limiting gear and a second limiting gear, so that the second limiting gear is driven to rotate, under the action of gear tooth slopes of the first limiting gear and the second limiting gear, after gear teeth of the second limiting gear slide through the first limiting gear and a threaded sleeve is lifted,