Mineral fertilizers were prepared by the cation exchange method. The adsorption isotherms of Zn2 -adsorbing montmorillonite and vermiculite assume double "S" shape, while the adsorption isotherms of Zn2 - adsorbing zeolite are of "Langmuir" form. The adsorption capacity gradation of three Zn2 -adsorbing minerals is montmorillonite > vermiculite > zeolite. The result of potted plant shows that the biomass of the second batch of corn applied with zinc fertilizer is better than CK (without application of zinc fertilizer). In the first batch, the biomass of vermiculite-Zn is the best, whereas in the second batch, the biomass of montmorillonite-Zn is the best. XRD, IR, DTA and TG were also used to analyze the crystal structure of minerals and mineral zinc fertilizers. The results reveal that vermiculite-Zn can be used as quick-acting zinc fertilizer, while montmorillonite-Zn can be used as long-acting slowly-released zinc fertilizer.