Dust-proof and shading adapter

A dust-proof and shading adapter, comprising a frame and shading components, an interior of a front end of the frame is formed with horizontally arranged chambers having upward openings, a front end of each of horizontally arranged chambers is provided with a port for mating engagement with a connecting piece, each of horizontally arranged chambers is equipped with one of the shading components that comprises a hook piece and a baffle, wherein, side walls of the chamber are provided with guide rails that restrict a vertical sliding movement of the baffle, wherein, the guide rails are arcuate and are curved outward towards the opening of the chamber, the bottom of each of the guide rails aligns with the bottom of the port, an upper end of the hook piece is hinged to the middle of an upper surface of the chamber, while a lower end of the hook piece is interlocked with the baffle through a hinged engagement, wherein a reciprocating rotational movement of the hook piece drives the baffle to slide up and down, enabling the baffle to cover or uncover the port.