An optical fiber sub-assembly and an optical fiber connector, where the optical fiber sub-assembly includes a connector component, where a first end of the connector component is used to connect an optical cable, and where a ferrule is disposed at a second end of the connector component. Additionally, a protection tube is disposed around the ferrule, where an end surface of the ferrule protrudes from an end surface of the protection tube or an end surface of the ferrule is level with an end surface of the protection tube. Further, the protection tube has a notch, and a beveled edge is formed at an outer end of the notch.