The invention relates to an extinction method of a slushing mold, belonging to a mold surface treatment method. The method includes the following steps: firstly, quartz sands with 0.1-0.2 Mum of diameter and glass balls with 0.3-0.4Mum of diameter are mixed in the proportion of 1:1-1:5; secondly, the figured zone of the mold is treated by a high-pressure ejection gun, the nozzle of the ejection gun has 1.0-1.2mm of diameter, the distance from the ejection gun to the surface of the mold is 200-300mm and the horizontal traveling speed of the ejection gun is 0.02-0.04m/s in the ejection process. The invention has the advantages that the extinction method is applicable not only to the surface treatment of various electroplated nickel casing in the automobile interior ornament product production field, but also to the surface treatment of nickel molds in other fields which demand for high surface gloss. The extinction method is convenient for operation, the raw materials are easily found and the cost is low.