Abstract: Many practical production problems in mining engineering can be generally summarized as the transmission problems in porous media. Due to wide distribution of porous media， it is of great practical and scientific value to study the flow， heat transfer and chemical reaction of porous media. The research status on flow， heat transfer and chemical reaction of porous media was reviewed， and the relationship among three processes was analyzed. It is pointed out that flow process， as a mode of transport， carries substances and heat to migrate along the direction of flow， causing changes of the concentration and temperature distribution of substances. These will affect the heat transfer and the chemical reaction process； Heat transfer changes the physical and chemical properties of fluids by changing the temperature distribution， and thereby affects flow process and chemical reaction； Chemical reaction changes the pore structure of porous media， changes the physical and chemical properties of porous fluid， and changes the heat transfer properties of solids and fluids， and then affects flow process and heat transfer through consuming reactants and producing new material. The analysis showed that chemical reactions， as the process occurring at micro-scale， have obvious effects on macro-flow and heat transfer processes. To quantitatively describe these effects needs to develop a new method of scale-span analysis， measurement or calculation.

Key words: Porous media, Fluid flow, Heat transfer, Chemical reaction, Scale-span, Interaction