The resources and quality of Caragana caragana flower were investigated, its physical and chemical components were studied, its active components were extracted and separated, and its antioxidant was studied in vitro，A set of key operating points and technical parameters for extraction, separation and purification of active components of Caragana caragana were established，A research method and evaluation system for antioxidant of active components of Caragana caragana in vitro were developed，It provided theoretical basis and data support for the preparation of high value-added products of Caragana caragana，Publish a paper4篇。