In the in-situ leaching of sandstone-type uranium deposit,it is necessary to accurately identify the formation interface. In the paper,continuous and discrete wavelet transform was performed on logging data of borehole ZKQX2 in Sanjiang Basin of Heilongjiang,the wavelet coefficient scalogram and high-resolution wavelet coefficient were used to identify the stratigraphic interfaces. The wavelet transform identified results were compared and corroborated by geological data,which suggests that the wavelet transform method produced a significantly effect.