Exhaust pipe bolt connection structure and engine

The utility model relates to the technical field of engines, and discloses an exhaust pipe bolt connection structure and an engine, the exhaust pipe bolt connection structure comprises an exhaust pipe flange, a bolt hole, an exhaust pipe, a bolt, a bolt, a bolt and a bolt, the bolt comprises a screw rod and a nut located at one end of the screw rod, the screw rod penetrates through the bolt hole, and an insertion gap is formed between the side wall of the screw rod and the side wall of the bolt hole; the sleeve is arranged on the screw in a sleeving mode and clamped between the nut and the exhaust pipe flange, a heat transfer gap is formed between the inner wall of the sleeve and the side wall of the screw, a positioning spigot is formed in the side, close to the exhaust pipe flange, of the sleeve, and the positioning spigot is inserted into the insertion gap and is in clearance fit with the bolt hole, so that the position between the sleeve and the screw is fixed. The exhaust pipe bolt connecting structure c