In-plane rotary optical flipper (10), comprising a handle (100), a control system (200), a drive system (300) and a lens frame (400). The control system (200) is provided in the handle (100), and the drive system (300) is provided in the handle (100) and located at the upper end of the handle (100). The lens frame (400) is connected to the drive system (300), the control system (200) controls the drive system (300) to drive the lens frame (400) to rotate in a plane, and the lens frame (400) comprises a plurality of lens circles (410), the centers of the plurality of lens circles (410) being located on the same circumference taking the center of the lens frame (400) as center of a circle, and the lens circles (410) being used for mounting lenses (22, 24).