Type 2 Diabetes is a common metabolic disease. The basic framework of "six-step treatment mode based on combination of disease and syndrome" for the diagnosis and treatment of type 2 diabetes is proposed as follows: 1) dual diagnosis is performed by combining western medicine disease and traditional Chinese medicine（TCM） syndromes

TCM disease names and syndromes. 2) Syndromes are differentiated according to different stages and by distinguishing macro-symptoms and micro-indicators

under the theory of combination of diseases and syndromes. 3) Based on syndrome differentiation

the major syndrome is defined

and can be appropriately adjusted according to disease differentiation. 4) The treatment principle and formulas are selected with reference to characteristics of both disease and syndromes. For single or simple disease or syndromes

simple formula is recommended; for multiple syndromes

the compound of multiple formulas should be used. 5) The basic formula can be modified according to the accompanied syndromes

medical history and constitution. 6) The prescription is optimized by use of herbs which are proved to have effects on blood glucose

lipids and blood pressure by modern pharmacological studies.