The present invention provides an access terminal box component, including a mounting plate and a fiber optic terminal base, where the fiber optic terminal base is mounted on the mounting plate; the fiber optic terminal base is configured to carry a fiber; the mounting plate is configured to mount the fiber optic terminal base on a preset position; a first locking slot and a second locking slot that are arranged opposite to each other are disposed on the mounting plate; a first locking hook is arranged at a position that is corresponding to the first locking slot and on the fiber optic terminal base, so as to be connected to the first locking slot by means of locking. The present invention improves detaching efficiency, and avoids damage to a part and a fiber on the fiber optic terminal base.