To study the pathological basis of metabolic syndrome and provide theoretic support for TCM in treating metabolic syndrome based on the connotations of the dysfunction of liver spleen and kidney. Methods：Discuss on the formation of metabolic syndrome with TCM theories. Results： The disturbance of energy metabolism is the source of metabolic syndrome. Yang deficiency of spleen and kidney can cause Qi movement disorders that lead to metabolic syndrome. Conclusion： Yang deficiency of spleen and kidney and phlegm resistance is the pathogenesis of metabolic syndrome，thus warming the kidney and strengthening the spleen is the right scheme for the treatment of metabolic syndrome.