Abstract: In the exploration of continental basins,the prediction of thin-interbedded sandstones is always a difficult problem which perplexes the work of exploration and development.Based on the data of high-resolution treatment in this paper,the amplitude plane of reflected waves in a target stratum is orthographically demonstrated and drew by means of a seismic model on the GEOQUEST system of man-computer on-line interpretation,And then the cumulative sandstone thickness and amplitude value in practical drilling are applied to fit their relational curve,According to this relational curve,an amplitude plan is converted into a semi-quantitative plan for sandstone prediction,and drilling coincidence ratios are preliminarily confirmed.