Abstract: The fault water damage accounts for most of the coal mine floor water inrush accidents in China, and the pillar design of fault waterproof coal(rock) is the main means to prevent fault water damage, which is related to the safety and efficient production of coal mine. The reasonable width of fault waterproof coal (rock) column can not only prevent the underground water from pouring into the mine through the fault, but also serve the reasonable and safe mining of coal resources. The design of fault waterproof coal (rock) column width involves many factors and is one of the focuses of many scholars and engineers. A variety of research methods have been applied at present, including theoretical calculation, multiple regression analysis, BP and RBF, similarity simulation, numerical simulation for the coal (rock) column design under different fault conditions have been specifically studied. On this basis, the research status of fault coal (rock) pillar is summarized, the existing problems are pointed out, and the future research technology and methods are prospected.