Environment-friendly allumen plating auxiliary

The invention relates to the technical field of hot dipping, and in particular relates to an environment-friendly allumen plating auxiliary. The environment-friendly allumen plating auxiliary comprises the following raw materials in percentage by weight: 10 to 30% of ZnCl2, 0.5 to 3% of NaF, 1 to 10% of K2ZrF6, 0.1 to 3% of AlCl3, 0.1 to 3% of CeCl2, 5 to 10% of ethanol, and the balance of water. The formed allumen plating layer contains 20 to 55% of aluminum. The environment-friendly allumen plating auxiliary provided by the invention is applicable to an allumen plating coating with high aluminum content (20 to 55% of Al); and a bright, smooth and complete plating coating without skip plating can be formed on a steel component by adopting the plating auxiliary.