PURPOSE: To offer an electronic range in which a breaking of strip line is surely prevented as well as the effective area in the heating room is enlarged by molding concavely that interior surface of the heating room which is facing to the strip lines introducing micro waves into the heating room.

CONSTITUTION: In an electronic range provided with a heating room 1 made of matal, a magnetron 2 equipped close to the heating room 1, and strip lines 6 which are arranged from the magnetron's output part 2a along the interior surface of the heating room 1, and which introduce micro waves emitted from the output part 2a into the heating room 1, that opposite interior surface 7a of the heating room to arrange the abovementioned strip lines 6 is molded concavely to insert and furnish the strip lines along the interior surface 7a of this concave. According this constitution, strip lines 6 can be arranged close to the interior surface 7a without shortening the spacing H between the interior surface and the strip lines 6 as well as the spacing H can be determined easily to the dimension requied