Abstract: The present invention relates to an oven which could heat food with light waves. In the oven of the present invention, the chamber is disposed in the housing, and both the chamber and the housing have an opening in the same direction; a first heat unit is disposed between the chamber and the housing; a gate is disposed on the openings of the housing and the chamber; the chamber has an arc surface; an interior pot with an arc surface is disposed in the chamber; the light waves, and the light waves generated and radiated by the first heat unit are reflected many times between the chamber and the interior pot, so the light waves could be absorbed by the interior pot so as to heat the food stuff by the heat which is conducted by the interior pot and the light waves which is radiated by the interior pot more efficient.