Abstract: In view of the characteristics of strata of salt lake facies in Wuyang - Xiangcheng depression, the exploration situation and the available logging data, some modem mathematical methodologies, such as mathematical statistics and neural network analysis, are used to successfully develop a set of quantitative and qualitative litholigic identification methods. An interpretation chart for interpreting reservoir lithology with log parameter is established and a logging suite suitable for the lithologies in the study area is presented. These methods can be used to accurately interpret lithologies in the study area.