This product is used in conjunction with the basic experimental platform for heat transfer to carry out the experimental module of one-dimensional steady-state heat conduction law and calculation in Fourier's law of heat conduction in "Heat Transfer". The equipment consists of a one-dimensional steady-state axial thermal conductivity experimental model consisting of a heating section, a sample section, a cooling section, and an insulation body. The sample section is easy to replace, and temperature measurement points are evenly distributed in each section. The data is collected to the basic experimental platform of heat transfer. The product is mainly used to analyze the temperature change law of columnar solid materials along the heat flow direction, scientifically understand and intuitively verify Fourier's thermal conductivity law, and calculate the thermal conductivity coefficient of the sample. It supports the replacement of samples of different materials and cross-sections and user customization, and can extend the research and development of insulation materials and thermal conductivity materials.