The utility model relates to a double-screw self-cooked extruding machine, which is composed of a machine frame, an electromotor, a double-shaft power dispenser, a twofold-gang shaft coupling, a multi-node type squeezing cavity, a double screw shaft, and a cutting shaper thereof, and the power output power is high. A screw shaft assembly is provided with multi-node screw monomers, backward vanes, and cutting knives which are in unequal distance. The two shafts are mutually parallel and engaged to enable the processing materials mixed, squeezed and kneading. Large shearing force is generated to make the materials boosting and heating to form a longer isothermal gelatinization segment. The materials are cooked (puffing) sufficiently to ensure the self-cooked quality. The whole working process of the materials is carried out under the condition of airtight stainless steel components, without pollution, and the hygienic quality of the product can be ensured.