Based on axially compressive test of 108 recycled concrete test block,this paper explores the influence of the soil of impurities on strength properties of recycled concrete.The test results showed that:The compressive strength of recycled concrete containing soil impurities can reach 56% to 63% in 7d; Water-cement ratio increased from 0.36 to 0.45,The strength of the recycled concrete containing soil impurities downward trend, and have a large decline,water-cement ratio increased from 0.45 to 0.53, the strength almost unchanged ;When the mud content is less than 3%,the compressive strength of recycled concrete does not substantially affect.