The dynamic interaction between maglev vehicle and three-span continuous guideway is discussed. With the consideration of control system, the dynamic interaction model has been developed. Numerical simulation has been performed to study dynamic characteristics of the guideway. The results show that bending rigidity, vehicle speed, span ratio and primary frequency all have important influences on the dynamic characteristics of the guideway and there is no distinct trend towards resonance vibration whenf1/(v/l) equals 1.0. The definite way is to control impact coefficient and acceleration of the guideway.The conclusions can serve the design of high-speed maglev three-span continuous guideway.