Disclosed a method of assembly and inspection of optical fiber connectors which attaches connectors to at least one cord end of a plurality of optical fiber cords in which single or multiple optical fibers are accommodated and inspects connection loss etc. due to connection of the connectors.A process of connecting the connectors to cord ends where the connectors are assembled is linked to a process of processing the other cord ends and then inspecting connection loss etc. of the optical fibers due to a connection of the connectors.