Computer hard disk

The utility model discloses a computer hard disk, including the shell, be equipped with the cushion course on the shell inner wall, be equipped with hard disk fixing device in the shell, hard disk fixing device includes reset spring and emergent baffle, reset spring is connected with through emergent baffle and inflates the bed course, hard disk fixing device's a bottom and a support connnection, the pillar is equipped with the spring on locating the cushion course on the pillar, hard disk fixing device's the left and right sides still is equipped with controls inner wall matched with mounting with the shell, is equipped with the draw -in groove with mounting matched with on the shell inner wall, is equipped with vertical screw hole on the mounting, and threaded hole is equipped with the screw, hard disk fixing device's top is equipped with the blotter, and the upper portion of blotter is fixed with branch, and shell upper end inside wall is equipped with heat abstractor, and the heat abstractor top is equipp