The content distribution of Cd, Pb and As in different part of paddy kernel and the effect of different processing method on the removal rate of heavy metal was researched. The result showed that Pb was the metal with the highest content in the sample and the part with the highest content of heavy metal was rice bran layer. The removal rate of heavy metal increased with the improvement of processing precision. When the rice milling reached 120 s, the removal rate of As was the highest which was 42.57%, while that of Cd and Pb were 24.38% and 41.38%. In the result, the heavy metals in rice can be removed by rice milling and improving rice milling precision.