Abstract: Ek22 member is the main oil-bearing strata in Kongxi slope because of its shallow buried depth,stable distribution and wide oil-bearing area.In order to carry out an indepth study on provenance scope,sand body scale and distribution regularities,the oil groups of Ek22 reservoir in Kongxi slope were divided into the upper set and the lower set,and the upper set was considered to be the study target.Based on characteristics of light and heavy minerals,sand body distribution regularities and seismic reflection characteristics,a systematic study on the influencing factors which affected the provenance location was carried out.The results indicate the detritus in the study area are believed to come mainly from the Xuyangqiao,Kongdian,Cangshi,Shenvsi and Yesanbo.