Abstract: The elevation amplification effect of rock slope is one of the main research contents of slope blasting vibration, which has great significance to the damage of the slope under blasting action. Through the establishment of slope blasting model, introducing the slope shape influence factor, we deduce multi-stage slope vibration displacement formula under the action of blasting vibration wave. Combined with on-site monitoring data analysis, the accuracy rate of the introduced slope shape of vibration displacement formula can reach 67% to 72%, which basically meets the request of preliminary estimate.