The temperature deformation caused by solar radiation of the maglev track beam is an important factor to be considered in the static and dynamic design. Based on meteorological data and solar radiation semi-empirical formulas of Shanghai in summer， a three-dimensional model for a section of maglev line steel box girder with transient state analysis method has been established using ANSYS software. The temperature field is calculated according to the principle of heat conduction and finite element method. The temperature gradient distribution of the maximum vertical and lateral temperature difference of the maglev track beam is analyzed. Based on the analysis results of the sunshine temperature field， the temperature deformation of the steel track beam with different support forms is calculated. The temperature deformation of the single-span simply supported and double-span continuous form maglev track beam are taken as the initial irregularity components. Vehicle-bridge coupled dynamic analysis of the vehicle is carried out and the dynamic response is taken for analysis. Results show that the temperature effect obviously increases the acceleration of the vehicle body and the amplitude of the suspended air gap. The electromagnetic force is increased by thermal effect to a limited extent. The influence of thermal effect on acceleration and displacement for the track beam is not obvious. The dynamic response values are still within the safe range of the standard regulations， but the safety status is worse.