With the rapid development of maglev technology, a series of problems have occured, among which the vibration of maglev vehicles cannot be ignored. In order to optimize the vibration transmission of a new type of low and medium speed maglev vehicle, a rigid-flexible coupling model which considering the elastic modes of the vehicle body is established; the effect of vehicle suspension parameters and under-vehicle equipment suspension parameters on the vibration transmission under different excitation modes and the effect of active equipment vibration on the vibration of the vehicle body is investigated by using the sweep frequency excitation method. The results show that the main vibration frequencies of the new low and medium speed Maglev vehicles are concentrated in the 2-3Hz and 15-17Hz ranges, not only the vehicle body vibration will be suppressed but the better dynamic performance will be obtained by optimizing the suspension parameters such as the damping of the vertical dampers , while reducing the suspension stiffness of the under-vehicle equipment can suppress the vibration transmission of the active equipment under the vehicle.