Objective: To compare the extracts of Yangerju and determine an optimum technique to extract. Method: Use pharmacodynamics test combined with the main index components change and fingerprint to evaluate the different extraction of Yangerju. Result: The anti-inflammatory, antipyretic, anti-bacterial effect of the boiling, alcohol precipitation, macroporous resin purification was no significant difference , fingerprint suggest that the macroporous resin and purification of sample impurities Peak reduction and the Extraction rate of 3,4-O-dicaffeoyl-quinic acid were more than 60%. Conclusion: Macroporous resin purification was an optimum technique to extract.