The most principal approach to improve indoor air quality(IAQ) of subway was to examine the fine particulate(PM-10) from the emission sources. Therefore, this study was carried on the investigation the fine particulate for comparison with the removal efficiency of PM-10 in divided the PSD(Platform Screen Door) and Non-PSD subway station from July, 2007 to May 2008. In the monitoring results, the range of PM-10 concentration of Non-PSD station was $44.6{sim}116.5{mu}g/m^3$ and the range of PM-10 concentration of PSD station was $23.9{sim}81.1{mu}g/m^3$. And then the range of PM-2.5 concentration of Non-PSD station was $17.4-56.6{mu}g/m^3$, and then the range of PM-2.5 concentration of PSD station was $17.9{sim}34.4{mu}g/m^3$. In comparison with the results of the PSD and Non-PSD subway station, we found that the PM-10 removal efficiency of PSD was 30-40%. In conclusion, the PSD will be applied the effective facilities of decreasing PM-10 in subway station in Korea.