The utility model relates to a conversion tool of optical fiber plugs, in particular to a multifunctional optical fiber switching box with a storage function. The multifunctional optical fiber switching box with the storage function comprises a shell body, wherein the shell body is internally provided with a partition plate used for dividing an area in the shell body into a first area and a second area, the front end surface of the shell body corresponding to the first area is provided with two FC jacks, the rear end surface of the shell body corresponding to the first area is provided with an SC jack and an LC jack, an optical fiber is connected between one FC jack and the SC jack, and an optical fiber is connected between the other FC jack and the LC jack. And the upper end surface of the shell body corresponding to the second area is provided with an opening, and a top cover is arranged at the opening. The optical fiber switching box integrates the FC-to-SC function and the FC-to-LC function, and facilitates the field wiring of testing optical fibers; moreover, the connecting optical fibers can be stored in the second area in the optical fiber switching box, and can be taken out for usage when the optical fiber switching box is reused, thereby facilitating the field wiring of the testing optical fibers.