Unidirectional introducing equipment of movable memory medium

The invention relates to a unidirectional introducing equipment of a movable memory medium. The unidirectional introducing equipment comprises a first U-disk interface, a second U-disk interface ,a USB signal output port, an ARM function module, a conversion plate from an Ethernet network to a USB signal, a USB signal router, a unidirectional optical transmission module and a first U-disk controlmodule; the circuit connection is characterized in that the second U-disk interface, the ARM function module and the unidirectional optical transmission module are sequentially connected in series together in two directions; furthermore, the unidirectional optical transmission module, the conversion plate from Ethernet network to USB signal, the USB signal router and the USB signal output port aresequentially connected in series together in single direction; and the first U-disk interface, the first U-disk control module, the USB signal router and the USB signal output port are sequentially connected in series togethe