To provide an electromagnetic wave freezer, an electromagnetic wave freezing container, and an electromagnetic wave freezing method capable of easily freezing a freezing object such as a food, an organ or an extracted tooth at home or in a private hospital, a dental clinic or the like, while preventing the deterioration of freshness or quality.

This freezer comprises an electromagnetic wave emitting means emitting an electromagnetic wave (e.g., a magnetron within a microwave oven 1) and a freezing means freezing a frozen object (e.g., a Peltier element 20). The freezing means freezes the a frozen object object such as food, an organ or an extracted tooth when the electromagnetic wave is emitted by the electromagnetic emitting means.