[Objective]The study aimed to discuss the effect of extraction condition on the extraction rate of flavonoids in the orange peel so as to determine the optimum extraction process condition.[Method]With the orange peel as the test material,through the single-factor test and the L9(34) orthogonal test,the effect of 4 factors including microwave power,ethanol concentration,solid-liquid radio and treatment time on the extraction of flavonoids were researched by using microwave extraction and the optimum extract...