A method of manufacturing NF which looks like fish bone is opened in the invention. It uses acetylene as carbon headstream, uses Nitrogen as carrying gas, uses Hydrogen as reduction gas, uses 0.1-2 mm of Foam Nickel as catalyst, and uses the CVD. Firstly, raise the temperature of the reaction stove, control the reaction temperature at the condition of 500-650C degree, best at the condition of 550-600 C degree, put the talent which is carried with foam Nickel catalyst at the permanent temperature section of the stove; then inflate Nitrogen and Hydrogen; keep the temperature for 5-9 hours, again inflate carbon headstream and keep the temperature for 1.5-3 hours. The ratio of acetylene and Nitrogen is 1:3-1:6, and the ratio of acetylene and Hydrogen is 1:1-2:1.