The extraction conditions were optimized as follows: Folium Ginkgo and Rhizoma Chuanxiong were powdered and soaked by fifteenfold-weight 60% alcohol, to get the highest content of Flavone and ligustrazine.

• 银杏叶、川芎粉碎成粗粉，用15倍量60%25的乙醇漉条件最佳，总黄酮和川芎嗪的含量最高。