Exhaust manifold

The utility model discloses an exhaust manifold which comprises a water jacket shell and an exhaust pipeline, and an annular water cavity is formed between the exhaust pipeline and the shell wall of the water jacket shell. Two or more air inlets are formed in one side of the exhaust pipeline in the length direction at intervals, two or more assembly holes are formed in one side of the water jacket shell in the length direction at intervals, and each assembly hole is connected with the corresponding air inlet through a sleeve. According to the exhaust manifold disclosed by the utility model, after gas enters the exhaust pipeline through more than two gas inlets in the side part of the exhaust pipeline, the gas flows towards the gas outlet end along the length direction of the exhaust pipeline. The flowing directions of gas in the exhaust pipeline are the same, exhaust is smooth, all the gas inlets are formed in one side of the exhaust pipeline, and connection with an exhaust port of the anti-explosion engine i