Anti-theft computer mainframe box

The invention discloses an anti-theft computer mainframe box. The anti-theft computer mainframe box comprises a box shell, wherein the interior of the box shell is partitioned into a computer hardware mounting chamber and an anti-theft chamber through a partition board; a pressure bearing plate is arranged at the lower end of the anti-theft chamber; a first pressure sensor is arranged between the pressure bearing plate and the anti-theft chamber; clamping lugs stretching into the anti-theft chamber are arranged at the upper end of the pressure bearing plate. According to the anti-theft computer mainframe box provided by the invention, the box shell and the pressure bearing plate can be firmly clamped through first electric push rods, a back cover plate can be locked from the inner part of the box shell through a second electric push rod, alarm equipment makes an alarm after illegal theft is detected, own position information can be sent for a long time after theft happens so as to provide convenience for foll