Abstract: Crude tara tannin was extracted by water and ethyl acetate at 60 ℃ for 30 min.The ratio of crude tannin-water-ethyl acetate was 1:1.5:4(g:mL:mL). The yield of product was 40.2 % and the purity of tannin was 80.4 %. Both yield and purity are low. The yield was still low when ethyl acetate was used to extract the recidual water phase. Refining tara tannin with mixed solvent of ethyl acetate and S-solvent (4:1) was studied. The optimum conditions are: solid to liquid ratio of m(crude tara tannin):V(water):V(mixed solvent)1:1.5:5(g:mL:mL), extraction temperature 60 ℃,extraction time 30 min. Under this condition, the yield of product was 67.1 %-69.0 %, the purity of tannin was 85.3 %-86.5 %, the extraction rate of tannin was 87.2 %-88.6 %. The yield and purity has been improved.