The invention discloses an optical fiber welding line sequence identifier, and relates to the technical field of optical fiber welding line sequence identifiers. The optical fiber welding line sequence identifier comprises a main body, an LED illumination lamp is installed in the main body, and a camera is connected in the main body, a processor is installed in the main body, and a storage moduleis connected in the main body, a battery board is installed in the main body, and an optical fiber neck is formed in the main body. In the optical fiber welding line sequence identifier disclosed by the invention, an auxiliary function can be implemented when workers dock and arrange optical fibers through the action of a convenient mechanism, so that the optical fibers can be sequentially clampedin the optical fiber neck, a movable plate can reversely rotated toward the direction of the optical fiber neck when mounting and docking works needs to be performed via the rotation of a hinge, in this way, the movable plate is fitted with the optical fiber neck as a whole, a sequential arrangement and placement function of optical fiber lines can be achieved by the bearing function of multiplegroups of bearing plates.