The island head and island tail of the highway safety island are generally painted with black and yellow reflective paint.At present,due to the coating supporting system,coating process,the differences in the performance of reflective paints of various manufacturers and the consideration of the contractor's comprehensive cost,the quality of such projects varies greatly.The constructability of reflective coatings,coating supporting system and construction technology were analyzed and discussed,hoping to improve the engineering quality of highway safety island coating.