The utility model discloses an extrusion sleeve provided with a stainless steel inner liner for producing miscellaneous grain instant noodles. The extrusion sleeve comprises a sleeve inner liner (1) and a circulating water jacket (2) sheathed outside the sleeve inner liner (1), wherein the sleeve inner liner (1) is provided with a feed hopper (3); an external thread is arranged at the front end of the sleeve inner liner (1); the circulating water jacket (2) is provided with a water inlet (4) and a water outlet (5); the circulating water jacket (2) is also provided with a temperature gauge (6) and a temperature sensor (7); and the circulating water jacket (2) is externally sheathed by a heating ring (8). The extrusion sleeve has the beneficial effects that the sleeve is made of stainless steel, thus being not easily corroded, not influencing the quality of a noodle cake, improving the processing quality of products and increasing the pass rate of products by more than 5%; the extrusion sleeve is high in degree of automation in temperature control and high in control accuracy, thus guaranteeing the constant temperature environment of the sleeve inner liner and guaranteeing the product quality; any constant temperature environment can be provided by the extrusion sleeve; and the extrusion sleeve is high in universality and wide in application scope.