USB connector interface switching device

The utility model relates to the field of USB (Universal Serial Bus) connectors, in particular to a USB connector interface switching device, which comprises a storage box, wherein a top cover is fixedly connected to the top end of the storage box and is used for placing a converter; the converter is provided with an input interface line and an output interface line, and the input interface line and the output interface line are each provided with a take-up assembly used for rolling and storing the interface lines and the output interface line; the mounting grooves are formed in the positions, close to the two sides, of the top end of the storage box, and sliding blocks are slidably connected to the side walls of the mounting grooves; the take-up assembly comprises a take-up disc, a clockwork spring is arranged on the take-up disc, the clockwork spring is fixedly connected with the input interface line, the input interface line and the output interface line are wound from the storage groove to the mounting gr