Abstract: Sixty\|eight surficial soil samples were collected from the tobacco\|planting area in Pinglu County in southern Shanxi during 2012 to 2013， and Cd， Pb， Hg， As contents in these samples were analyzed. The spatial distribution of these heavy metals was studied by Geostatistics and GIS techniques to provide theoretical basis for division of cleaning tobacco\|producing areas. It was shown that the contents of these 4 heavy metals in soils were moderately spatial\|correlated. The contents of Hg and Cd were higher in the western and eastern regions， respectively. The contents of Pb and As were relatively low in the study area. The potential ecological hazard grade of heavy metals in the study area was class Ⅱ （medium hazard degree）. Among all these 4 heavy metals， the influence of Hg on local soil environment quality was the most serious.

Key words: soil, heavy metals, GIS, spatial distribution, pollution assessment