Fine particle mass (particulate matter ≤ 2.5 μm; PM2.5), which is primarily from combustion source. In this study, it was reviewed that the hazard of PM2.5. And then it was shown the sources of PM2.5 in Tangshan urban district. In addition, it is analyzed the data of several day’s PM2.5 in Tangshan urban district. The pictures showed that the visibility along with the change of PM2.5 concentration. These results indicate that the concentration of PM2.5 obviously changed by the local and synoptic meteorological data as the sources of PM2.5 were not decreasing.