The Fenwei basin, within 612 ground ssures developed, is the most concentrated and serious area in China and even in the world for the development of ground ssure hazards. The Jiaocheng ground ssure in the Taiyuan basin is known for its length and for in icting the most damage and having the most impact in China. To discover the origin of the Jiaocheng ground ssure, surveying, trenching, and geophysical exploration were used to investigate its geological basis, developmental characteristics, and genetic process. With a total 46 km length and an 80-120 m impact bandwidth, it is one of the longest ground ssures found in the world. The ssure is on the Jiaocheng fault's hanging wall, and the NE strike is quite consistent with this fault. Houses, roads, elds, and other structures have all been damaged to varying degrees by the ssure. Vertical dislocation, horizontal tension, and right-lateral slide are the most common types. This ssure has synsedimentary features, according to trenching and shallow seismic pro ling. The Jiaocheng ground ssure was formed because of the interaction of several forces. Due to regional extension, the Jiaocheng fault shifted, creating a rupture system in the surface strata. The pumping activity contributes to the formation of the current ground ssure. This effort promotes research into ssure mechanics and has implications for disaster prevention and mitigation of ground ssures.