The present invention provides a kind of methods from extracting chlorogenic acid from Eucommia leaves, it includes the following steps: a, weighs folium cortex eucommiae; B, water extracts; C, it pre-processes; D, it filters; E, upper macroporous absorbent resin; F, it is concentrated; G, drying: spray drying: 150 DEG C -200 DEG C of intake air temperature, 50 DEG C -90 DEG C of air outlet temperature to get chlorogenic acid crude product. The present invention is mentioned using water, is pre-processed, upper large pore resin absorption column, is concentrated and dried to prepare chlorogenic acid crude product. Aqueous extract is not concentrated and directly upper macroporous absorbent resin carries out purification process after pre-processing, and solves the problems, such as that chlorogenic acid is led to decomposition by thermally labile for a long time in water because being concentrated, while saving enrichment process link and shortening the production cycle. In addition, the crude product of 20-60% various specifications can be produced by controlling the concentration parameter of different eluents.
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