The invention relates to the anti-counterfeiting technical field, in particular to a preparation process of a magnetization-induced developing anti-counterfeit mark and the anti-counterfeit mark prepared by the preparation process. The preparation process comprises the following steps: mixing paramagnetic ferroferric oxide powder with polyurethane light-cured resin, adding ethylene glycol, and performing ultraviolet lighting to induce reaction to prepare a magnetization-induced developing nano coating liquid; coating a substrate with the coating liquid by an anilox roller, and obtaining a magnetization-induced developing coating after curing and drying; coating the coating with gloss oil, and performing ultraviolet curing; coating by adopting an adhesive, drying and laminating to prepare the magnetization-induced developing anti-counterfeit mark. The application problem of a magnetization-induced developing nano material product is solved, the bottleneck of magnetization-induced developing nano material industrialization is broken through, a paramagnetic magnetization-induced nano material is applied to an anti-counterfeit material or an anti-counterfeit mark, the true or false is easily distinguished, and the unique anti-counterfeit effect is realized. The magnetization-induced developing coating on the magnetization-induced developing anti-counterfeit mark is strong in adhesive power and high in stability.