Abstract: Noise data of key positions in passenger compartment and driver′s cabin is collected from field testing. Influence of parameters such as train speed, track structure format and rail geometrical line shape on metro vehicle interior noise is analyzed respectively by adopting A\|weighted sound level and linear sound level. Results show that the vehicle interior noise sound pressure level and train speed has non\|linear relationship; the use of vibration reduction measures raises the vibration isolation efficiency, but the interior noise is also slightly increased.