The utility model relates to a dual-layer bellows type exhaust apparatus used in coal mine rubber-tyre vehicle. Main structure includes a water line bellows, a gas line bellows, a flange plate and a nozzle seat. The utility model adopts a dual-layer internal-external bellows type design and water circulating cooling structure. A flow water cooling pipe is added outside the exhaust pipe and folds the entire exhaust pipe inside. Both pipes are of circular cylindrical curved bellows structure, which increases radiation area. The bellows has elasticity, toughness, flexibility, and forms a soft connection, which eliminates internal stress and has cushion effect when exhausting gas. The apparatus has reasonable structure and good gas-exhausting water-cooling effect, reduces the gas exhausting temperature, makes the gas exhaust of the engine safer, protects the engine part, and is the ideal exhaust apparatus of coal mine rubber-tyre vehicle and other vehicles.