To provide a microwave radiation continuous baking furnace capable of stably baking an object to be baked by microwaves irrespective of material and shape of the object to be baked, reducing the number of defective products having crack, breakage, and deformation, improving its quality, and preventing the occurrence of breakage of a conveyance roller to contribute greatly to the improvement of productivity and to provide a continuous baking method for the object to be baked by utilizing microwave radiation.

This continuous baking furnace of tunnel type has a heating/sintering region for sintering the object to be baked by at least electromagnetic wave radiation and a cooling region for cooling the baked body obtained in the former region to provide the baked body continuously. A front chamber having a preheating device for preheating at least the object to be baked is arranged in an inlet part into the heating/sintering region.