PROBLEM TO BE SOLVED: To provide a film formation method that can form a film capable of giving excellent oil repellency and water repellency to a surface of a material by a simple method, and to provide a cutter material obtained by using the film formation method.SOLUTION: In the case of forming a fluorine containing film 24 on a surface of a material 23 such as surgical knives used for surgery, the fluorine containing film 24 is formed on the surface of the material 23 by generating an atmospheric pressure plasma jet 21 by using a raw material gas 17 containing a fluorine compound such as tetrafluoromethane, etc. using an atmospheric pressure plasma jet-generating device 11, and then by irradiating the surface of the material 23 with the atmospheric pressure plasma jet 21. An inert gas such as argon, etc. is contained in the raw material gas 17. It is preferred to hold the temperature of the material 23 at 100°C or below in the case of forming the fluorine containing film 24 on the surface of the material 23.
