Abstract: Methodsof preparing nano-graphite can be divided into two categories,the first category includes the techniques of preparing graphite nanopowders from natural flake graphite include ball milling,detonation splitting,ultrasonic powdering and electrochemical intercalation,while the other category is synthesis includes pulsed laser deposition,detonation synthesis,chemical vapor deposition and chemical synthesis.The current application fields of graphite are described and its development is prospected.