The utility model belongs to the technical field of block chain technique and specifically relates to a heat radiator for block chain electric power data storage hard disk is used, the housing comprises an upper housing and a lower housin, last casing cartridge is in the internal portion of inferior valve and pass through a plurality of locking bolt fixed connection go up the top of casing and lower casing and offered a plurality of vent respectively with the bottom, the other horizontally connect of the internal part of inferior valve has first baffle and second baffle, the mounting groove has been seted up to the upper surface of first baffle, the rectangle through -hole has been seted up to the bottom of mounting groove, just the inside bottom four corners of mounting groove all is connected with the supporting pad perpendicularly, and is a plurality of the hard disk main part is installed jointly at the top of supporting pad, inside the hard disk main part is located the mounting groove the both ends symmetry of hard disk main part is equipped with fixing device. The utility model discloses, simple structure, simple to operate has good heat dissipation function simultaneously,the effectual normal operational environment who ensures the hard disk main part.