Portable CPCI ruggedized computer

The utility model relates to the field of ruggedized computers, and discloses a portable CPCI ruggedized computer which comprises a case, a hinge piece, a keyboard device and a dismounting mechanism, a display is fixedly arranged on the side face of the case, the keyboard device is rotationally arranged on the display through the hinge piece, a first assembly hole and a second assembly hole are formed in the front side and the rear side of the case respectively, and the keyboard device is arranged on the keyboard device through the hinge piece. A maintenance plate and an interface panel are clamped in the first assembly hole and the second assembly hole respectively, the disassembly and assembly mechanism is arranged on the case and comprises four positioning plates and a side plate, a side groove is formed in the side face of the case, the side plate is clamped with the side groove, the positioning plates are fixedly connected with the side plate, and the side plate is fixedly connected with the side groove.