Combined with comprehensive test of the pilot section of the Beijing-Shanghai high-speed railway and focused on the structure key parts of the both ends of the end thorns structure which adjacent to the road and bridge structure connected position,the vibration characteristics test on CRTSⅡ slab ballastless track bridge-subgrade transition were developed. The vibration response of spatial change characteristics along the road longitudinal and vertical direction and the relationship between the speed of train and the vibration response are analyzed.Test study show as follows:①Along the road longitudinal direction the maximum value of vibration response is located at the junction of the end thorns structure transition board side and the subgrade bearing layer,showing that the support stiffness of the former is less than the latter and reflecting that the end thorn structure transition board are not preferably achieve gradually transition from high to low of the stiffness;②On the vertical multi-storey structure layers the vibration response is relatively large when the horizontal direction structure is discontinuity and show a decreasing trend along the depth,but the vibration characteristics is significantly improved when the track slabs are longitudinal connected;③With the train speed increased the vibration displacement show a linear increase while the vibration velocity and vibration acceleration show a nonlinear accelerated increase relationship.