As the elderly frequently use subway stations, there is a need for the acoustical improvement of subway platforms from a barrier-free perspective. In this study, the distribution characteristics of noise and signal guide sounds on subway platforms are determined for different locations. The entering and leaving noise of the train and the signal guide sounds were measured for thirteen and fourteen points along the two subway platforms. As a result, the maximum difference (LAeq) between the noise values for the train entering and leaving for the measurement points ranged from 5.0dBA~9.0dBA and 9.2dBA~10.9dBA, respectively. Additionally, the maximum difference (LAeq) between the signal and guide sounds for the measurement points ranged from 6.2dBA~6.5dBA and 4.7dBA~6.5dBA, respectively. The maximum difference (LAeq) in the signal to noise ratio (S/N ratio) between the noise and signal guide sounds for the measurement points ranged from 5.1dBA~14.6dBA. It was also found that noise had more influence on the S/N ratio than the signal guide sound. These results suggest that there is a need for noise reduction in various positions of a subway platform to enhance speech intelligibility.