The invention discloses a preheating mixed micro-surfacing construction technology. A preheating mixed asphalt mixture is prepared by stirring hot asphalt and mineral aggregate, and then the preheating mixed asphalt mixture, a small amount of emulsified bitumen and water are added into a micro-surfacing special construction machinery for the construction of mixing and paving. The invention has simple process, obviously improves the service life of micro-surfacing, and is suitable for highway construction and maintenance.