<p>A spraying film is formed on the surface of a base material (42), and the spraying film is high-frequency-induction-heated while a portion in the vicinity of the surface layer of the spraying film is kept non-fluidized to thereby re-melt a portion on the lower layer side of the vicinity of the surface layer and allow the spraying film to closely bond to the base material (42). This method can smoothly form a quality, wear-resisting film on the surface of a base material to thereby modify the surface of even a complicated-shape matter to be treated having an inclined portion.</p>
