The utility model discloses an office supplies technical field's an inquiry unit for office management, the on -line screen storage device comprises a base, the bottom four corners of base all is provided with removes the wheel, inquiry case and printing device are installed respectively to the top left and right sides of roof, the left side of inquiry case is provided with the chamber door, controlling means respectively with intelligent lock core and password input device electric connection, to inquire the host computer places at the inquiry incasement, the protective action to the inquiryhost computer has been played, prevented that the inquiry host computer from receiving the damage, dust and water stain pollution have also been prevented, and only just can open the chamber door through the input password, safety performance, query result's printing can be realized through printing device, wireless communication device can realize the teletransmission of data, user's image information is gathered to the camera, traceability nature is strong, network security protector has played network protection's effect, prevent that the network invasion from leading to revealing of secretinformation.