ABSTRACT
We summarized the researches of syndrome differentiation for type 2 diabetes mellitus (T2DM) in this article. According to the constitution feature of obesity and non-obesity and analysis of researches of different medical scholars, we put forward that the easy-suffering constitutions were the basis of the evolution and development of syndromes of T2DM, and the different inducements were the conditions of that courses. The persons whose constitutions were of qi-deficiency of spleen and kidney and excessive stomach often appeared a obese physique, and the people whose constitutions were of yin-deficiency of both the liver and kidney usually showed a non-obese shape. Affected chronically by the inducements, the evolution and development of the syndromes had its own rules respectively corresponding to the different constitutions as the diseases go on. Therefore, to integrate the constitution, disease stage and pathological change with specific zang-fu organs can better grasp its rules of syndrome differentiation.