Abstract:To explore the effect on the three contents of catechin，naringin and phlorizin in Malusdoumeri（Bois.）Chev by different processing methods.A SHIMADZU VP-ODS C18（250 mm × 4.6 mm，5 μm）column was used.The separation was achieved using acetonitrile（phase B）and 0.2%phosphoric acid in water（phase A）with a linear gradient，the flow rate was 0.8 mL/min，the detection wavelengths was set at 285 nm，the column temperature was set at 30℃.The results showed that：The content of catechin in different processed products of Malusdoumeri（Bois.）Chev were as folllows：parched sample（14.23 mg/g）＞ salt prepared（12.53 mg/g）＞yellow-parched sample（7.35 mg/g）＞carbonized sample （7.23 mg/g）＞ wine prepared（5.12 mg/g）＞ raw materials（3.71 mg/g）.The contents of naringin were as follows：wine prepared（6.18 mg/g）＞ parched sample（5.35 mg/g）＞ salt prepared（4.66 mg/g）＞ yellow-parched sample（3.26 mg/g）＞ raw materials（2.54 mg/g）＞carbonized sample（1.87 mg/g）.The contents of phlorizin were as follows：salt prepared（0.98 mg/g）＞parched sample（0.82 mg/g）＞ wine prepared（0.76 mg/g）＞ yellow-parched sample（0.43 mg/g）＞ raw materials（0.37 mg/g）＞carbonized sample （0.27 mg/g）.Different processing methods might have some affection on the quality of Malusdoumeri（Bois.）Chev.Processed，and the methods of salt prepared and so on increased the contents of catechin，naringin and phlorizin，while the processing method of carbonized reduced the contents of naringin and phlorizin in Malusdoumeri（Bois.）Chev.