The principle possibility of nanosize carbon material’s synthesis in macroamounts for the short intervals of time by the method of electro-explosion in a liquid is shown. Conformities to the law of nanocarbon’s producing at multicyclic treatment are explored, they showed swaying, falling practically to the zero, character of increasing of materials mass with increasing of cycles. Mass of produced nanocarbon is determined by the amount of atoms in the chains of hydrocarbons, by the selected energy in a flaming channel during the one impulse and quantity of cycles of treatment.