Twelve kinds of chlorinated pesticide and five organnonitrogen phosphirya pesticide affixed in rice samples were determinated by Gas Chormatography(GC) under different deanup methods in order to improve the efficienay of GC determination of pesticides residue.The cleanup methods were as follows:standard florisil column,short florisil column,cellulose larbon column and silica gel G column.Itis concluded that GC based on:extraction (hexane);deanup(florisil xolumn);and detection by dectron capture detector(ECD) can effectively detrminate the pesticide residue in rice.