When the running speed of high-speed maglev vehicle reaches 600 km/h (running 550 km/h continuously), the radiated noise has a great impact on the environmental noise along the line. In the design stage of maglev vehicle, the high-speed noise source intensity was deduced according to the existing noise data, and the mode prediction was carried out according to ,The guidance on noise and vibration source intensity values and treatment principles in environmental impact assessment of railway construction projects, (2010 Revision) (TJ [2010] No. 44). According to the measurement method, the environmental noise along the line was predicted and evaluated, and the corresponding control measures and calculation verification were implemented to solve the problem of excessive environmental noise. The results show that the influence of noise radiated by maglev system on the acoustic environment along the line could be effectively reduced by adding noise barriers and aerodynamic optimization of vehicles, and the noise along the line could meet the requirements of railway boundary noise and acoustic environment quality standards..