An optical fiber connector, comprising: a guide protective sleeve, at least two snap joints, a heat-shrinkable bush, a coupling nut and a sheath, wherein the guide protective sleeve, comprising at least two through-hole openings for receiving the at least two snap joints, is sleeved on an optical fiber body of the optical fiber connector, and is arranged to guide alignment between the optical fiber body and an optical fiber adaptor, and protect a pin component of the optical fiber body; the at least two snap joints, arranged partly within the at least two through-hole openings of the guide protective sleeve and partly between the guide protective sleeve and an optical cable, are arranged to fix the optical cable connected with the optical fiber body; the heat-shrinkable bush wraps the at least two snap joints and extends to a portion of the optical cable; the coupling nut is sleeved on the optical fiber body connected with the guide protective sleeve, and is arranged to be connected with the optical fiber adaptor; and the sheath is sleeved on another region of the optical fiber connector not wrapped by the coupling nut, and extends to a portion of the heat-shrinkable bush; wherein the guide protective sleeve is connected with a rear sleeve of the optical fiber body; wherein an inner wall of the guide protective sleeve is provided with a first positioning key and a first positioning groove; correspondingly, an outer wall of the rear sleeve is provided with a second positioning groove and a second positioning key at corresponding positions; wherein the inner wall of the guide protective sleeve is provided with a barb through which the rear sleeve is fixed. a guide protective sleeve, at least two snap joints, a heat-shrinkable bush, a coupling nut and a sheath, wherein the guide protective sleeve, comprising at least two through-hole openings for receiving the at least two snap joints, is sleeved on an optical fiber body of the optical fiber connector, and is arranged to guide alignment between the optical fiber body and an optical fiber adaptor, and protect a pin component of the optical fiber body; the at least two snap joints, arranged partly within the at least two through-hole openings of the guide protective sleeve and partly between the guide protective sleeve and an optical cable, are arranged to fix the optical cable connected with the optical fiber body; the heat-shrinkable bush wraps the at least two snap joints and extends to a portion of the optical cable; the coupling nut is sleeved on the optical fiber body connected with the guide protective sleeve, and is arranged to be connected with the optical fiber adaptor; and the sheath is sleeved on another region of the optical fiber connector not wrapped by the coupling nut, and extends to a portion of the heat-shrinkable bush; wherein the guide protective sleeve is connected with a rear sleeve of the optical fiber body; wherein an inner wall of the guide protective sleeve is provided with a first positioning key and a first positioning groove; correspondingly, an outer wall of the rear sleeve is provided with a second positioning groove and a second positioning key at corresponding positions; wherein the inner wall of the guide protective sleeve is provided with a barb through which the rear sleeve is fixed.