Abstract: Restricted by the spread range of the drilled sandgravel rock body, the study of source supply channel of sand-gravel rock body was controlled by the fault transition zone, the determination of sand-gravel body by seismic phase analysis, and the prediction of sand-gravel mass by attribute analysis. The results show that the fault position control of the transformation zone supply channels, the gravel rock source affected the paleogeomorphic form, thus forming a groove corresponding sedimentary framework, and the chaotic properties can describe the distribution range of gravel rock. The faster the sand and gravel mass accumulation, the worse the stratification, the more chaotic the seismic reflection and the higher the value of chaotic property.