PURPOSE: To disinfect the edged tool by a method being harmless to the human body by blowing hot air thereto.

CONSTITUTION: When a razor 1 is put into a heating chamber 9, a switch 2 works, and electric conduction is executed simultaneously to a heating wire 5 and a fan 6. Hot air generated as its result is blown to the razor and it is heated and disinfected. By a timer after a heating time determined in advance, or when the surface of the razor is heated to a temperature determined in advance, a temperature sensor works, the electric conduction to the heating wire is stopped, and heating of the razor is suspended. The fan feeds continuously air of the normal temperature for another prescribed time, and cools the razor. By the timer after a cooling time determined in advance, or when the surface of the edged tool falls to a temperature determined in advance, the temperature sensor works, and the electric conduction to the fan is stopped. In such a way, the heated and disinfected edged tool is cooled in a short time, and can be reused. Since a disinfectant is not used, this method is harmless to the human body.