An optical fiber connector includes a ferrule, a fastening tube, and a cover plate. The ferrule includes a through hole and a breach. Front and rear parts of the through hole respectively include a pre-embedded optical fiber and a field optical fiber. A joint of the two optical fibers is located at the breach. A part of the through hole is exposed in the breach. The fastening tube includes a ferrule accommodating portion accommodating a part of the ferrule on which the breach is disposed, and an opening disposed thereon. The opening connects the ferrule accommodating portion, and is positionally corresponding to the breach. The cover plate passes through the opening, is disposed in the breach, and presses the joint. The ferrule is easily machined and can adopt a material hardly influenced by environment temperature. The joint is fixed, and an amount of joint loss is stable.