In order to know the regularity of the noise effect of Hainan Eastern Ring Railway, the field measurement of Haikou section was performed. The main conclusions included that the noise increase curve of the train operation period doesn’t present the sound source attenuation characteristic. In the urban area, through monitoring noise of running trains with the different number of the roadside trees, the noise of railway traffic could be reduced. Around the train running line, monitoring indoor noise at different floors, the different regularity of the noise effects was obtained. At the same time, the level of noise when increasing the number of trains per hour in the future was predicted.