The invention provides a shockproof computer mainframe, and belongs to the field of computers. The shockproof computer mainframe comprises a mainframe shell, a mainboard, a memory card and a hard disk, wherein the upper and lower ends of the mainframe shell are respectively provided with a rubber protective seat, both sides of the middle portion in the mainframe shell are respectively provided with a long strip-shaped block, a sliding groove is formed in each long strip-shaped block, both sides of the mainboard are located in the corresponding sliding grooves, the mainboard is fixedly connected with the strip-shaped blocks through first fixing bolts, the top of the memory card is provided with a fixing block, the bottoms of the mainboard and mainframe shell are symmetrically provided withthreaded pipes, a damper is arranged between the two threaded pipes, the upper and lower ends of the damper are in threaded connection with the corresponding threaded pipes, the bottom in the mainframe shell is provided with a rubber fixing seat, the hard disk can be placed in the rubber fixing seat, both sides of the rubber fixing seat and both sides of the hard disk are correspondingly providedwith fixing lugs, and the rubber fixing seat is fixedly connected with the fixing lug at the same side of the hard disk through a second fixing bolt. The shockproof computer mainframe has the advantages of being capable of playing a role in damping, thereby protecting the mainboard, the memory card and the hard disk.