Fiber optic terminal box is the final connector of a fiber optic cable, one end of which is the fiber optic cable and the other end is the pigtail, which is equivalent to the equipment that splits a fiber optic cable into a single fiber, its function is to provide fiber to fiber fusion, fiber to pigtail fusion and optical connector handover. It also provides mechanical protection and environmental protection for optical fiber and its components, and allows proper inspection to maintain the highest standard of fiber management, which can be further divided into wall-mounted fiber optic terminal box, rack-mounted fiber optic terminal box, indoor and outdoor fiber optic terminal box two types.