Acanthopanax senticosus extract and preparation method thereof

The invention relates to a preparation method of an acanthopanax senticosus extract, and the acanthopanax senticosus extract prepared by the preparation method and a preparation comprising the acanthopanax senticosus extract. The preparation method comprises the following steps: acanthopanax senticosus water decocted extract paste prepared by water extract of an acanthopanax senticosus medicinal material is precipitated by alcohol, then pass through macroporous resin for adsorption and elution, eluent is concentrated, then again precipitated by alcohol, and is refined to obtain the acanthopanax senticosus extract; the refining method comprises use of DM1180 resin for adsorption, elution and secondary ultrafiltration of the eluent. The method provided by the invention can significantly reduce the content of impurities and especially nonpolar invalid impurities in the acanthopanax senticosus extract, improve the purity of effective components in the acanthopanax senticosus extract and security and stability of the acanthopanax senticosus extract, can reduce energy consumption, greatly improves the extract yield, is superior in effect compared with the method in the prior art, and has great application prospect and market value.