This paper points out that the problem of soil pollution is becoming increasingly severe,and soil leaching technology,as the most widely used soil remediation technology,is well-known to researchers.Through the study of combining ALLU screen hopper with ex situ soil leaching technology to treat polluted soil,the design is carried out from three dimensions:technical route,section layout of the remediation workshop,and plane layout.Two on-site experiments are conducted on a cyanide contaminated site as the experimental object.The experimental results indicate that the proposed ALLU screen hopper combined with ex situ soil leaching technology is feasible for treating polluted soil.