With the rapid development of housing industrialization, the application of aluminum alloy template has become an important prerequisite for the development of housing industrialization. Aluminum alloy template pouring wall has good stability, high bearing capacity and good molding effect. In order to strengthen the adhesion between the concrete joints in the process of secondary structure construction, the concrete joints are usually roughened. This article through to the traditional centrifuge hair with water cannon roughcast technology were analyzed, the advantages of high pressure water gun roughening process, operation process and construction control key points, to solve the technical problems encountered in large area concrete cut wool processing, can for the secondary structure construction plastering construction provides valuable experience, has good popularization and application value.