Abstract: A badminton stadium with full closed sound barrier measures is located on one side of the rail viaduct. It is an indoor stadium built on sound barrier. When the train passes the stadium, it radiates a lot of noise. Therefore, the line noise, bridge foundation vibration and indoor noise are tested respectively, and the indoor noise characteristics are analyzed through the correlation and structural acoustic characteristics.Results show that the indoor noise is affected by the operation of vehicles and mainly comes from the abnormal noise radiation caused by the sound barrier.