Abstract:The preliminary experiments and a three-variable, three-level Box-Behnken design were performed to study the microwave-assisted enzymatic extraction of biochanin A from Dalbergia odorifera T. Chen leaves. The optimum parameters were: extraction time 15 min, irradiation power 300 W, irradiation temperature 34℃, pH 5.2, amount of cellulase 3.5 mg·g-1. Under the optimal conditions, the average extraction yield of biochanin A was 1.579 mg·g-1.