Split type product processing heat preservation box capable of achieving rapid preheating

The invention relates to a split type product processing heat preservation box capable of achieving rapid preheating. The split type product processing heat preservation box capable of achieving rapidpreheating comprises a product processing heat preservation box and a gas mixing container which are arranged in a split mode, wherein the gas mixing container is communicated with the product processing heat preservation box through an air inlet pipeline and an air outlet pipeline; an air outlet automatic regulating valve is arranged on the air inlet pipeline; an air inlet automatic regulating valve is arranged on the air outlet pipeline. According to the technical scheme, the difficult problem that the gas mixing container can only be independently heated for the product heat preservation box in the current industry is solved; in the technical scheme, heat gas can be quickly and uniformly conveyed into the product heat preservation box, the product heat preservation box can quickly reach a set temperature, and