This paper discusses the heat transfer problems in the design of special clothing for high temperature operation. A unified partial differential equation model is established according to the laws of thermodynamics for the variation of the temperature of four layers with different materials. Because the four layers of media are different, the decision variables are divided into four layers, that is, four for loops are built in the code for splicing, and the finite difference method of classical

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... explicit format is used to solve the partial differential equations. The classical display is used in the solution process. The finite difference method of the format finally obtains the temperature distribution of each layer.