Exhaust passage and engine

The utility model provides an exhaust passage which is characterized in that a cylinder cover bolt mounting hole is formed in the edge of a cylinder cover in the exhaust direction, and a first exhaust passage and a second exhaust passage on the cylinder cover are combined and converged to form a converging passage; the first exhaust channel is provided with a first center line in the exhaust direction, the second exhaust channel is provided with a second center line in the exhaust direction, and the first center line and the second center line intersect to form an intersection angle. A confluence outlet of the confluence channel is an exhaust channel outlet formed in the side portion of the cylinder cover. The first exhaust passage and the second exhaust passage form a confluence passage on one side of the cylinder cover bolt mounting hole, exhaust heat acts on the single side of the cylinder cover bolt mounting hole through an avoiding arrangement structure of the second exhaust passage and the cylinder cove