Objective] To explore the relationship between excessive internal heat in TCM and intestinal microflora ,provide scientific evidences for pathogenesis of excessive internal heat.[Method]With the research methods of clinical observation and literature review,analyze the characteristics of excessive internal heat,and collect research progress about intestinal microflora to find out the link.[Result] Head and facial tissue is more susceptible to injury,which is determined by the organizational characteristics. People suffering from excessive internal heat widely have problems of energy metabolism and mucosal immune disorders. Intestinal microflora plays an important role in energy production,conversion,storage and use.They can change the way that organizations use energy,and change AMPK phosphorylation to influence the energy metabolism of the body.Thus gut microflora imbalance may lead to disorders of energy metabolism.On the other hand,inflammatory mediators express abnormally in these people. Impaired immune function leads to inflammatory states,which causes imbalance of gut microflora.While intestinal microflora also can regulate intestinal mucosal immune response by adjusting related effective factors. [Conclusion]Excessive internal heat is closely related with intestinal microflora from the aspects of energy metabolism and mucosal immunity,which may provide new ideas to explore the pathogenesis of this disease.The researches based on intestinal microflora and diseases bring brilliant prospects of individual prevention and treatment for TCM and western medicine .