赤芍以70%乙醇回流提取，减压浓缩，过大孔吸附树脂柱，先用水洗，再用20%乙醇洗脱，收集醇洗脱液，减压浓缩得赤芍总苷，收率为5.0%，其中芍药苷的含量占本品的75%以上。

Technical conditions for the preparation of TPG were optimized. The root of Paeonia lacti flora Pall or P. vertchii Lynch were extracted with 70% ethanol under reflux. The concentrated extract was dissolved in water, passed through a macroporous resin column, and washed with water, and then eluated with 20% ethanol. Concentration of the eluate under reduced pressure gave the final TPG with a paeoniflorin content75%, and a recovery of 5. 0%.