The invention belongs to the field of medical instruments, and particularly relates to a speculum. The speculum comprises an upper expanding part, a lower expanding part and a flushing structure, therear end of the upper expanding part is hinged to the rear end of the lower expanding part, reinforcing ribs are arranged on the upper and lower expanding parts, the flushing structure is arranged onthe upper expanding part and the lower expanding part, the upper expanding part comprises an integrally molded upper expanding piece and an upper handle, and the lower expanding part comprises an integrally molded lower expanding piece and a lower handle; the flushing structure comprises a liquid ball, a medicine injecting joint and a flushing pipeline. The speculum has the advantages the structure is simple, the design is reasonable, the upper and lower expanding pieces are provided with reinforcing ribs, the integrated strength of the upper and lower expanding sheets is ensured, flushing, local disinfection and medicine applying are achieved by the flushing structure, the operation is convenient, the implementation is easy, the working intensity is reduced, the inspecting treatment timeis effectively reduced, and the uncomfortable feeling of an inspected woman is reduced.