The invention relates to an optical fiber connector. The optical fiber connector comprises a connector shell, a contact element module and a rear dustproof cover, wherein the front end of the connector shell is an insertion connection end, and the rear end of the connector shell is a cable outlet end; the contact element module is fixedly inserted in the connector shell, and an optical cable is led out from the rear end of the contact element module; the rear dustproof cover is fixedly assembled at the cable outlet end of the connector shell and covers the contact element module; and the reardustproof cover is provided with an avoidance gap to avoid the optical cable. The dustproof cover is arranged at the cable outlet end of the connector shell to cover the contact element module in theconnector shell, so that the amount of dust entering the connector shell through the cable outlet end is reduced, the contact element module is prevented from being polluted, and the optical signal transmission efficiency of the contact element module is ensured; and moreover, the avoidance gap in the rear dustproof cover can avoid the optical cable connected with the contact element module, so that smooth leading-out of the optical cable is guaranteed.