In order to provide guidance for exploration activity in the Guantao formation of Raoyang sag, the authors utilize the detrital components and its changes in the plane, heavy mineral assemble, ZTR coefficient, the thickness of layer and distribution characteristics of sand to research the provenances of Guantao formation in Raoyang sag. The analysis result shows that the provenances are derived from the northeastern and the southwestern of the Raoyang sag. Both provenances are metamorphic area and meet together at Liulu area in the center of Raoyang sag. The northeastern provenances has lower composition maturity, it is feldspathic lithic sandstone area; the southwestern provenances has the higher composition maturity than northeastern provenances, it is lithic feldspar sandstone area; the area of Liulu where two sources meet together is feldspar sandstone area. With the control of provenances, the braid river sedimentary facies distribution is near provenance area, and the meandering river sedimentary facies distribution is far away from provenance area, moreover, the channel bar and point bar are favorability sand bodies, and the area of Liulu where two sources meet together is of favorability prospect. The study on the provenances has important significance for sedimentary facies, sand body distribution and prediction of favorable exploration areas.