The invention belongs to the technical field of connectors, and particularly relates to a die for manufacturing an optical fiber connector. The die is characterized by being composed of a pressing die body, a positioning die body, a sleeve connecting die body and a forming die body; when the optical fiber connector is manufactured, the forming die body is fixedly installed on a base of a press, the sleeve connecting die body is arranged on the forming die body in a sleeving mode, the positioning die body is installed in the sleeve connecting die body, and the pressing die body is arranged outside the positioning die body in a sleeving mode; two positioning holes are formed in the positioning die body. The die has the advantages that the structure is simple, manufacturing is easy, the manufactured optical fiber connector of a double-hole structure is uniform in size, the qualified rate of finished products is high, the manufacturing speed is high, the cost is low, and an optical fiber connecting device formed by the optical fiber connector of the double-hole structure is small in size and low in weight.