Abstract: Field experiments were conducted to investigate biochar (SWT), diatomite(GZT), zeolite(FSF) and lime(SHF). Their effects on maize growth and cadmium (Cd) uptake by maize kernels and the Cd availability in soil were studied. The results showed that, except SHF, SWT, GZT and FSF could improve maize plant height, leaf area and biomass. The yield of maize was also significantly increased. All four amendments increased soil pH values. Compared to the control treatment, SWT, GZT, FSF and SHF increased soil pH values by 1.44, 1.36, 1.46 and 1.55 respectively. Except SHF, three amendments could improve soil OM. Meanwhile, compared to the control treatment, the application of SWT reduced soil OM by 22.19% and adding different amendments led to a decrease of available Cd content in soil by 30.92%-41.27%. Among them, SWT was the most available treatment to decrease the available content of Cd in soil. GZT was ranked to be the second. At the same time, all four amendments could reduce Cd uptake by maize kernels. Compared to the control treatment, the application of SWT reduced the concentration of Cd in maize kernels by 85.90 %. Our results in this study demonstrated that applying SWT amendments was the best functional amendments for the remediation of heavy metal soil of Cd.