To provide a safety device for a cooking utensil to boiling steam, in which a protective device for lowering temperature of boiling steam can be instantaneously installed on an electric cooker or an electric kettle having a boiling steam hole.

A cup-shaped member is formed of heat-resistant material such as metal, covered with heat-insulation material along the whole outer circumference, and composed to be set above the steam hole of an electric pot or the like, putting the opening downward. In the cup-shaped member, a fan is provided to be rotated by a motor so as to lower the temperature of steam.