Abstract: Using Ampelopsis grossedentata which is growing on the soil rich in selenium as material in Enshi of Hubei province，wall-breaking assisted extraction test of dihydromyricetin（DMY） was carried out. The results showed that under the condition of wall-breaking assisted extraction，5 min was extracted and the ratio of tea material to 100% pure ethanol solution was 1∶50（g∶mL） at room temperature（25 ℃），the content of DMY in tea soup was 15.172%.

Key words: Ampelopsis grossedentata, dihydromyricetin（DMY）, wall-breaking assisted extraction, process research