A millimeter-level magnetic clay particle adsorption material recorded as MSAZ was used to test its soil Cd removal efficiency. For different simulated Cd-contaminated soils, the results showed that the optimal mass ratio of MSAZ:soil was 1:5. With this application ratio, the removal rate of 0.43 mol/L HNO₃ extracted Cd in the simulated red soil was as high as 95% in a single application, and the removal rates could also reach 75%-80% in the brown and black soils. For dryland soils with high Cd background values and Cd-contaminated paddy soils, the results showed that the removal rate of 0.43 mol/L HNO₃ extracted Cd by MSAZ was about 40% from the two soils in a single application. After five times of repeated use, the cumulative removal rate of 0.43 mol/L HNO₃ extracted Cd on MSAZ reached 98% from the actual Cd-contaminated paddy soil. The MSAZ still maintained 85% adsorption capacity, and its recovery rate was higher than 80% after five reusing cycles. The magnetic clay particles tested in this study has excellent soil Cd removal performance and showed show potential application prospect, which provide materials and technical supports for subsequent in-situ treatment of Cd pollution in farmland soil.