Germination process can significantly improve the contents of bioactive components in buckwheat.Buckwheat vinegar with high content of GABA and D-chiro-inositol was developed by fermenting uncooked material combined with traditional fermentation of Shanxi vinegar without being smoked.The results showed that the products had pure harmony colour,mellow taste,with high content of GABA to 234 mg/100 mL,and D- chiro-inositol to 75.05 mg/100 mL,which were 3 and 10 times more than existing products with the same type in the market,respectively.So the physiological functions of this product were enhanced remarkably in antioxidation,soften blood vessels,lowering blood sugar and blood lipid.