The pathogenesis of diabetes regards Yin deficiency as the root cause and dryness-heat as the symptoms. Yin deficiency and dryness-heat with the passing of time will impair Yin and Qi. Qi deficiency is the main factor in the chronic course of diabetes. Blood stasis

phlegm dampness and other pathogenic products produced by Qi deficiency stay and infuse in collaterals. And pathogenic factors compound into toxin. "Qi deficiency leading to toxin"is the key pathogenesis of protracted course of diabetes

leading to the organic complications of each organ in the whole body

high fatality and disability rate and multiple changeable and deteriorated syndromes. Based on the knowledge of "Qi deficiency leading to toxin"

in clinic doctors use the method of tonifying Qi and reinforcing kidney disintoxication to prevent and treat diabetic nephropathy

tonifying Qi and invigorating the circulation of blood disintoxication to treat diabetes peripheral neuropathy

and disintoxication to dredge collaterals to treat diabetes combined with cardiovascular and cerebrovascular diseases. All have achieved good clinical effects.