The invention belongs to the technical field of chemical synthesis, and particularly relates to a leveling agent for powdered coating and a preparation method of the leveling agent. The leveling agentfor powdered coating is prepared from the following raw materials: butyl acrylate, methyl acrylate, hydroxy acrylic resin, maleic anhydride, perfluoro modified polyacrylate, benzoyl peroxide, mercaptan and a solvent. By the adding of the perfluoro modified polyacrylate into the acrylates leveling agent, as a fluorine carbon bond is small in bond length, high in bond energy and low in fluorine atom polarizability, introduction of a fluorine-containing polymer improves the heat stability, the chemical stability, the glossiness, the low surface energy, the chemical corrosion resistance and the like of the leveling agent, which are higher than the properties of the same type of acrylate products.