Abstract: Xintai City river village East bigger range ground fissures and cracks occur centrally,crack point along Lotus Hill fault in linear distribution,location away from the goaf,bare rock,after investigation and analysis,exclusion of the karst collapse,regional tectonic activity triggered by may,based on the thought,fault zone in goaf and crack extent,with respect to this area,compared with the traditional theory to predict the range expansion of the 243m,equivalent to the mining ground deformation angle decreased to 48 degrees.