During compacting of paver to hot asphalt mixture,the resistance to motion of these mixture particles decrease quickly with increasing vibration acceleration of screen,and the viscosity of high-temperature and loose mixture rapidly declines under repeated loading.The mixture gradually produces the phenomenon of continuous flowing with a decrease in shear strength of loose particles,which makes the dynamic response and force transfer of vibration screen more complex.Therefore,it is necessary to study the mechanism of fluid-structure interaction vibration compaction and improve the smoothness and performance of the pavement.This paper combined the finite element method and boundary element method,the solid was calculated by solid element,and the fluid calculation was made by boundary element.The theoretical mathematical model of the vibration screed to asphalt mixture was established,and the obtained natural frequency of the system was revised and correction factor is given.On the basis of the study of the relevant elements,the dynamic compaction system model of screed to paving was established by ANSYS software.According to the influence of vibration acceleration and temperature on the viscosity of loose mixture,the material characteristic of high temperature asphalt mixture in the flowing state was analyzed.And then,the impact of different material parameters,structural parameters and vibration parameters on the interaction motion of the screed was also analyzed through the qualitative analysis of the vibration response of the system.Compared the simulation calculation and the theoretical results,the influence law of vibration acceleration and material temperature on paving uniformity was obtained.On this basis and the fluid-structure interaction theory,the calculation and discussion of the selection of the fluid elements were carried out,which could improve the horizontal and vertical uniformity of the paving and the working stability of the screed.