In this paper,the construction technology of milling protective coating,quick-drying repair adhesive and line sealant was studied.By observing the bubbles and shrinkage holes of milling adhesive film during spraying,the thickness of dry film is measured,and whether the paint film is curled during milling,resulting in two steps.The influence of construction technology on the properties of strippable protective materials for milling under different environment and construction times was studied in the project of etch ratio deviation index requirement.