Crustal paleo stress estimation is essential in understanding dynamic aspects of tectonics, and is also important for petroleum exploration and ground designs. Fault striation analysis is a technique to estimate the stresses from the orientations and slip directions of meso-scale faults. Variety of methods have been developed for the analysis and has been applied to many regions in the world in the past twenty years. The most extensively used method that was invented during this period is an inverse method to determine an optimal stress from fault-slip data. However, the separation of stresses from heterogeneous fault-slip data is a week point of the method, so that several attempts have been made to solve the problem. Multiple inverse method is the latest approach to this problem. Tilting of a rock mass including faults makes the analysis difficult, because the relative age of the faulting and the tiliting is difficult to determine. Methods to deal with tilted blocks will enable us to analyze more general data. The development of descriptive techniques of meso-scale faults may help the separation of plural stresses.