[Objective] The paper aims to set up an optimal method for extraction technology of flavonoids and limonoids from pomelo peels.[Method]Usingethanol water bath methodextracts flavonoids; usingdichloromethane refluxing methodextracts limonoids.[Result]The optimal extraction conditions of flavonoids were ethanol concentration 60%,solid-liquid ratio 1∶ 25 g / ml,extracting temperature 70 ℃,extracting time 1. 5 h and extraction 2 times. In these conditions,the average of three actual verification extraction yiel...