Dry type outside chip removal deep hole drill

The utility model discloses a dry type outside chip removal deep hole drill, which structurally comprises a drill bit, a drill rod and a drill holder. Each of the drill bit and the drill rod is in a hollow structure, central holes in the drill bit and the drill rod are communicated with each other, an air filling port communicated with the central hole in the drill rod is arranged on the drill holder, and an air outlet is arranged on the drill bit. The dry type outside chip removal deep hole drill can be used with a common lathe for machining of especially deep holes, machining cost of the especially deep holes is reduced greatly, chips can be blown out of a chip area by means of compressed air, so that most heat can be directly dissipated, temperature of the chip area can be reduced greatly, and the dry type outside chip removal deep hole drill is especially suitable for machining of graphite deep holes.