Abstract: The field remediation effect of phyto-mimic method and the changes of Cr, Ni, Zn and Fe in different forms of soil were studied, using the in situ remediation technique based on phyto-mimic method. Results showed that after three months of phyto-mimic remediation, the concentration of Cr, Zn, Ni and Fe decreased month by month, with the reduction rate for heavy metals being 17.33%, 27.03%, 31.60% and 5.17%, respectively. The morphological changes of the four kinds of heavy metals in phyto-mimic remediation are not the same. The reduction rate of soil Zn and Cr contents of different forms is as follows: acid soluble> reducible> oxidizable> residual fraction; while the reduction rate of soil Ni and Fe contents of different forms is as follows: acid soluble> oxidizable > reducible > residual fraction. The four kinds of heavy metals can be enriched in the filler and simulation blade of the phyto-mimic remediation device, and the adsorption properties of the filler will affect the content of the four kinds of heavy metals in the simulated blade.