Samples of soil and air around a coal-fired power plant were collected and the concentrations of Hg were determined through the amalgamation/CVAAS method.Spatial distributions of Hg in soil and air around the power plant were investigated by using geostatistics techniques.The results showed that mercury concentration in air samples varied from 4.3 ng·m-3 to 12.4 ng·m-3 with an average of 7.0 ng·m-3，and Hg levels in soil samples were in the range of 0.045—0.529 mg·kg-1 with an average of 0.180 mg·kg-1.After twenty-three years of operation，the power plant has caused an increase of mercury levels in the surrounding environment.Except the annular region of radius between 1 km and 3 km contaminated by the power plant maximally，mercury pollution decreased as the distance from the power plant increased.