The hot air penetrating high temperature oven is a high-end special oven applied in the food industry. Its main principle is that the materials in the oven can be evenly and rapidly blown by high temperature hot air of more than 300 degrees Celsius, so that the materials can volatilize water in a very short period of time and have secondary expansion, and obtain a more crisp taste; At present, the main application fields include breakfast cereal chips and some snack foods. The machine adopts single-layer conveying structure, with alternating saturated air supply from top to bottom, so that the materials can be heated and expanded in all directions; Equipped with hot air opposite recovery function and thickened aluminum silicate insulation board, greatly saving energy consumption of equipment; The production process does not require manual operation, and the automatic and continuous production can be realized after the hot air temperature and running speed are set.