Based on the completed shaking table test of dynamic interaction between soil and building group,this paper uses finiteelement method to analyze the parameters and study the influence of group effect on structural dynamic response.The upper structure is taken as shear wall.The finite element model of soil and building group interaction is established by ANSYS finite elementsoftware.Davidenkov is used to simulate soil dynamic nonlinearity.By adjusting the number and layout of buildings,three soil-high-rise shear wall building models of soil and 3 buildings,soil and5 buildings,soil and 7 buildings are set up.These three modelsare compared and analyzed with the finite element modelof soil and single building respectively.The results show that when the upper buildings are mainly arranged along the vibration direction,the cluster effect of buildings will increase,when the number ofbuildings parallel to the vibration direction in the original shear wallbuildings increases,and the buildings parallel to the vibrationdirection are greatly affected by the cluster effect.Based on the mechanism analysis of the interlayer displacement,the resultsshow that the inter-layer displacement of the superstructure willdirectly increase,and the inter-layer displacement of the surround-ing structure along the direction of vibration will be larger than that of the central region structure,because there is a huge difference in the elastic modulus between the pile foundation of the superstructure and the surrounding soil.