Abstract: This experment was conducted by following the procedure of a method which could determine the BaP concertration in paddy by liquid chromatograph. First, broke the paddy sample into piece,then put these pieces into a fatextractor. And secondly.recirculated petroleum ether extraction for 8 hours.Neufnal aluminas,were used fou the cleaning of extracted solutions with KD concentration for enrichment.At last,Liquid Chromatograph was used to determine the BaP concentration. The working conditions. of LC were as follows: separate coloum was ODS-C18. mobile phase was a solution of 85%CH3OH and 15%H2O with flow rate as 1 ml/min and monitored by fluorescent light.

Key words: Paddy Bap Liquid chromatograph determine