One hundred samples of typical tobacco plough layer in Linyi of Shandong province were collected, and the contents of As,Cd,Cr,Hg and Pb were determined. The result showed that heavy metal contents in Linyi soil were lower than limiting value of national standard. The contents of As,Cd,Cr,Hg and Pb were 0.20 ~ 30.52 mg/kg,0.01 ~ 0.38 mg/kg,4.38 ~ 128.00 mg/kg,0 ~ 0.36 mg/kg and 4.99 ~ 70.80 mg/kg. The contents of As,Cd,Cr,Hg,Pb and its limiting value were compared from three different pH levels, the biggest ratio was 76.3%,96.7%,85.3%,90.0% and 88.5%. The result showed that Linyi tobacco filed is facing pollution from potential heavy metals, we must strictly control the exogenous to make sure that the quality of tobacco filed is safety.