A method for producing vapor grown carbon, including mixing a raw material
gas containing an organic compound and an organo-transition metallic
compound preliminarily heated preferably to a temperature of 100 to
450.degree. C. with a carrier gas heated preferably to a temperature of
700 to 1,600.degree. C., and introducing the resultant gas mixture into a
carbon fiber production zone, wherein preferably a mixture of an aromatic
compound and acetylene, ethylene, or butadiene is used as an organic
compound. The method can include dissolving the transition metallic
compound in a solvent, atomizing the resultant solution into fine
droplets, evaporating the solvent in the droplets to thereby obtain fine
particles of the transition metal compound, and introducing the drifting
particles with an organic compound gas into the carbon fiber production
zone. Vapor grown carbon fiber is thereby produced.