Abstract:Through exploration work in Caoheya section, it is found that the occurrence of rock salt is rich in this area. The thickness of this deposit is 0.40~14.72m, and average grade of NaCl is 86.39%. It belongs to stable thickness and uniform grade type strata. Rock salt strata not only occurred in cut coverage of F1, F2 and F3 faults, but also occurred in north part of F3 fault.