Optical fiber socket assembly, dustproof cap, optical fiber socket and optical fiber connector box

The utility model provides an optical fiber socket assembly, a dustproof cap, an optical fiber socket and an optical fiber connector box, and belongs to the technical field of optical fiber connection. The optical fiber socket assembly comprises an optical fiber socket and a dustproof cap. The dustproof cap comprises a dustproof cap body, a connecting ring and a connecting rope. The connecting ring is connected with the opening end of the dustproof cap body through a plurality of connecting points, one end of the connecting rope is connected with the dustproof cap body, and the other end is connected with the connecting ring. A limiting structure is arranged on the side wall of the optical fiber socket and used for limiting the connecting ring to be separated from the optical fiber socket. In the dustproof cap provided by the invention, the connecting ring is connected with the dustproof cap main body, so that a user can sleeve the connecting ring on the optical fiber socket by holding the dustproof cap main body, and the operation difficulty is reduced. Moreover, since the connecting ring is connected with the dustproof cap main body through the plurality of connecting points, after the connecting ring is sleeved on the optical fiber socket and the connecting ring is limited by the limiting structure, the user can easily disconnect the connecting ring and the dustproof cap main body.