Abstract: In order to solve the problems of low processing capacity,high noise level and high energy consumption of the horizontal vibrating centrifuge.Based on theoretical arithmetic,finite element modeling and reduced parameter,established three-dimensional model of double-mass horizontal vibrating centrifuge,and on which carried out modal analysis and harmonic response analysis.The results show that when the excited frequency in the range of 25~27 Hz,the centrifuge worded best;when excited frequency= 26 Hz,the amplitudes of primary mass and second mass are all closed to the ideal state and with the best vibration frequency;when spring stiffness design reference ρ≥5 the centrifuge worked stable.