The macroporous adsorbent resin (amethyst extraction special resin) provided by Suzhou Bojie Resin Technology Co., Ltd. can effectively enrich the daunorin, has large adsorption capacity, fast adsorption rate, strong selectivity, easy elution and convenient regeneration. High recycling efficiency, cost saving, and mild operating conditions. The resin has long service life, stable physical and chemical properties, wear resistance, economical and practical, and the effect of extracting daunsonin is very satisfactory.