The fiber optic terminal box is the final connector of a fiber optic cable. One end is a fiber optic cable and the other end is a pigtail. It is equivalent to a device that splits a fiber optic cable into a single fiber optic cable. The user cable terminal box installed on the wall provides the function. The fusion of the optical fiber and the optical fiber, the fusion of the optical fiber and the pigtail, and the handover of the optical connector. It also provides mechanical protection and environmental protection for the fiber and its components, and allows for proper inspection to maintain the highest standards of fiber management.