Abstract: In order to determine the attenuation law of blasting vibration and its influence on the safety of the mine slope, the import building(construct) and homes of the near village, the blasting vibration was measured in real-time in the open pit coal mine. By analyzing the measured data with the one variant linear regression analysis, the attenuation law of blasting vibration wave propagation was obtained (K=46,a=1.61, correlation coefficient r= 0.94). Considering the effect of blasting vibration are superimposed, combined with the destruction of cave dwelling investigation of the near village by the previous explosion, the surrounding villages cave allowable vibration velocity of 0.1 cm/s is more appropriate, and the relation between the maximum allowable dose and safe distance is given.