The invention discloses a Chinese herbs paste for treating gastrointestinal dysfunction and a preparation method thereof. The paste is prepared through the following steps of: crushing white atractylodes rhizome medicinal materials into coarse powder; supercritically extracting by adopting CO2, and then adding an obtained extractive to a matrix to prepare a medicine. The Chinese herbs paste disclosed by the invention has stable property and an obvious improvement action on the gastrointestinal dysfunction; in addition, the medicine has a pharmacological effect obviously superior to that of the traditional applied composite of a white atractylodes rhizome essential oil component and a white atractylodes rhizome water extraction component, a composite of the white atractylodes rhizome essential oil component and a white atractylodes rhizome ethanol extraction component and a single component extractive, and the advantages of high medical transdermal absorption rate, good air permeability, continuous medicine release, long effect, convenience for use and no skin allergy or clothes contamination phenomena.