Abstract: This article is based on the basic characters and deformation styles etc of the loose fill slope with great height.It takes the way of gene sensitive analysis to calculate and discuss effect degree for the major factors to the stability of the high slope.The factors include geometric features of the slope,daily blasting vibration and water.They are used to determine the geometric features of the slope as the key factor to its stability.Then It puts forward the proper angle,height and the reserved width,artificial deposits parameters and the maximum deposit height of the slope under the condition of the stable dump slope.