Reflective vest is a kind of personal safety appliance which is made of reflective materials inlaid in the main parts of clothes or vests and used in night or bad weather. Reflective clothing can protect workers better in outdoor work. Reflective clothing is made by using the high refractive index glass bead regression reflection principle, through the advanced technology of focusing post-processing. It can reflect the distant direct light back to the light-emitting place, and has good retroreflective optical performance no matter in the day or night. Especially at night, it can play as high visibility as during the day. The safety reflective clothing made of this kind of high visibility reflective material can be easily found by night drivers whether the wearer is in a remote place or under the interference of light or scattered light. The emergence of reflective materials successfully solved the problem of “seeing” and “being seen”.