PURPOSE: To provide a tool covered with a carbide film which can firmly and closely bond a tool main body and the carbide film together, and its manufacture.

CONSTITUTION: This invention is concerned with a tool covered with a carbide film comprising both a joining film 33 and a carbide film 35 laminated in order over a tool main body 31 wherein the former is composed of one kind out of tungsten formed by a vapor phase composition process and compound of tungsten and carbide, and the latter is composed of diamonds or cubic boron nitride. It is desirable that an intermediate film 51 composed of Ti, Ni, Fe, Al, Co, Au, Pr, Mg, Cu, Zr, Hf, Ta or Ag, and of one kind of chemicals out of carbide, nitride and boride of those metals shall be interposed between the joining film and the carbide film, and it is also desirable that a carbide tungsten film is formed on the carbide film 35 side of the joining film 33.