A sewing machine of the invention comprises: a bed part, an oil pan arranged under the bed part, a rotary shuttle arranged in the interior of the bed part, an end part connected to the shuttle axis of the rotary shuttle, a shuttle axis supporting part arranged in the interior of the bed part capable of rotatablely supporting the shuttle axis, and a blower mechanism which is used to cool the shuttle axle. The blower is characterized by being provided with an opening part formed on the wall of the oil pan, and the blower is arranged on the oil pan and is formed to jam the opening part, a partitioning vertical wall projecting from the bottom wall of the oil pan to the bed part is formed around the opening part, the partitioning vertical wall includes a screening wall part arranged at the connection part of the rotary shuttle and the shuttle axis, the screening wall part is configured to block the air supply from the blower to the rotary shuttle, the blower is utilized to supply air to the shuttle axis supporting part of the bed part.