The stability problem of near chamber's surrounding rock under blasting dynamic is a complex problem, is concerned with many subjects, such as Explosive Mechanics, Rock Mechanics and Damage Mechanics etc. This paper based on the property theoretical analysis for demolition seismic wave, According to far district weak stress site in demolition, and the development condition of slight crack, put forward blasting dynamic loose circle theory. Made blasting vibration observation in Xinji Mine. And with ANSYS/LS-...