This products of purposes is provides a has security warning role of reflective vest, reflective vest of surface Shang corresponds to printed has photosensitive material reflective article; its features is: by said reflective article including symmetric printed in reflective vest Qian, and Hou surface sides of three to five article along longitudinal throughout reflective vest of reflective article, reflective vest Qian, and Hou surface sides of reflective article of convex arc faces to layout, and and with side of arc reflective article General parallel layout. This structure of reflective article of ends towards outside, in lights irradiation Xia, from wearing who of positive or back see, reflective article of ends in Visual Shang has towards outside stretch of effect, formed than reflective article actual reflective warning surface more big of warning regional visual effect, expanded has effective of warning area, improve reflective vest of warning effect, maximum protection wearing who of personal security.