Abstract: The extraction content of total flavones was as the evaluating index.The effect of radiation time,power of microwave oven,ethanol concentration and solid/liquid ratio(g/mL) on the extraction yield were investigated by orthogonal design method and ultrasonic extraction technology.The results of tests showed that the optimum microwave-assisted extraction conditions included: ethanol concentration of 70%,radiation time of 20 seconds at a time and repeated for six times,the power of microwave of 480 W,solid/liq...