[Study on extraction of zhuyun 3# by supercritical CO2].

To optimize the extraction process for zhuyun 3# pill by supercritical CO2. Five kinds of supercritical CO2 extraction method had been applied. The methods were estimated by the pharmacological results and the content of flovone. The best extraction process for zhuyun 3# pill was that Lüzhenzi, Baizhu and Xuduan were extracted with supercritical CO2 and the residue was estracted by water, the other five kinds of medicinal materials were extracted by water.