Forming machines and methods for forming a croissant dough piece in which the lateral end sides can be bent to form and join them, while they contact the upper surface of a transporting conveyor, are provided. In one aspect of the invention, the forming machines include an interception pin 75, which is arranged above the transporting conveyor 5 such that it is vertically movable and it is also movable in the conveying direction of the transporting conveyor 5. The forming machine also includes a plurality of pressing members 99, which are arranged above the transporting conveyor 5 such that they are vertically movable and are movable in the conveying direction of the transporting conveyor 5 at a velocity faster than that of the interception pin 75, and they are movable toward and away from each other. When the interception pin 75 intercepts the center portion of the croissant dough piece 3 in the length thereof at the leading side thereof along the conveying direction, the pressing members 99 bend both sides of the croissant dough piece 3 about the interception pin 75 that is centered thereon to form or join them, while downward components of force are applied to both sides thereof. The circumferential surface of the interception pin 75 ejects air when the pressing members 99 are lifted up and the interception pin 75 is pulled up from the croissant dough piece 3.