Abstract:On the basis of expounding the basic principle using 2-D wavelet transform for seismic attributes data,the paper built up the effective flow used for multi-scale edge detection of image.According to the characters of 2-D image formed by seismic horizons data,the effective basic function and scale function of wavelet ware constructed,which improved the precision of image edge detection and image partition.In order to improve the computational efficiency,the optimum designs of algorithm and wavelet filter were implemented and application of the method to study the distribution of frac-ture,providing foundation for the prediction of oil/ gas reserve.It is proved by the processing of real data in studied areas and in comparison with threshold method and Sobel method that the method is effectiveness and feasibility.