A dental medical oral mirror and using method

The invention discloses a dental medical oral mirror, comprises a lens fixing box. The lens fixing box is a cylindrical box with no lid, the opening position of the lens fixing box is provided with aflexible lens, and the center of the back side of the flexible lens is connected with a silk thread. A lens fixing box is internally provide with a fixed pulley, and the fixed pulley is located directly behind the center of the flexible lens. A link rod is articulate on that side of the lens fix box, the link rod is a hollow link rod, the hollow cavity of the link rod is connected with the hollowcavity of the lens fixing box, the link rod is connected with a handle, an adjusting switch is arranged on the handle, and the thread connected with the flexible lens is connected with the adjusting switch through the hollow link rod around the fixed pulley. The lens of the device is a flexible lens, and can be adjusted as a convex mirror so as to enlarge the scope of mirror reflection and enlargethe scope of field of visi