The utility model discloses a sealed forced air cooling ruggedized computer, its front shroud are located frame the place ahead, and the back shroud is located the frame rear, set up the fan subassembly on the back shroud, and the side of front shroud sets up the panel, wherein the frame includes the frid, lower frid, left side wallboard, right side wallboard, a separation plate, a supporting plate, apron and fin, the whole cuboid that is of frame, the frame top surface is by last frid, apron and fin are constituteed, upward set up a plurality of fin on the frid, the top of fin sets up the apron, the bottom surface is by lower frid, apron and fin are constituteed, set up a plurality of fin down on the frid, the bottom of fin sets up the apron, the frame left side is left wallboard, the right side is right wallboard, set up the baffle in the middle of the frame, two regions about this baffle falls into the frame, set up the power board in the region of a left side, set up mainboard module and backup pad among the right region. This is consolidated, and computer structure is compact, the extension is nimble, has good heat dispersion, three proofings performance and electromagnetic shielding performance.