Computer information leakage prevention device and use method

The invention discloses a computer information leakage prevention device and a use method. The computer information leakage prevention device comprises a base and a computer screen mounted at the topof the base, a partition plate is arranged on one side of the computer screen; a mounting groove matched with the partition plate is formed in one side of the top of the base; the bottom of the partition plate extends into the mounting groove and is movably connected with the mounting groove; a threaded groove is formed in one side of the top of the base, a screw is installed in the threaded groove in a threaded mode and located on the side, away from the computer screen, of the partition plate, the same rectangular groove is formed in the inner wall of the bottom side of the installation groove and the inner wall of the bottom side of the threaded groove, and a first groove is formed in the bottom of the side, away from the screw, of the partition plate. The computer information leakage prevention device is reasonable in design, effectively prevents a peeper from peeping contents on the computer screen, can give an alarm to remind a user when the peeper disassembles the partition plate, and effectively guarantees the information safety on the computer screen.