Military notebook display screen fixing device used for being placed on table top

The invention relates to a military notebook computer display screen fixing device used for being placed on a table top. The military notebook computer display screen fixing device comprises a base riveting piece, a left fixing frame riveting piece, a right fixing frame riveting piece, two positioning pin assemblies, a screen support riveting piece, a screen fixing plate, an overturning pressing plate, a screen fixing screw, a screen support fixing screw, a first fixing block, a second fixing block and a U-shaped clamping block. When the display screen fixing device is in a use state, a screen support riveting piece is in plug-in positioning fit with a positioning hole in the first fixing block through a positioning pressing rivet screw, and is fixed through a screen support fixing screw which is locked in a through hole of the first fixing block, a front pressing rivet nut column and a threaded hole of the second fixing block in a penetrating manner; the screen bracket riveting piece is laterally fixed on th