Since the outbreak of the COVID-19, more and more businesses and individuals have become concerned about how to maintain social distance in public. Especially in large venues, it is important to maintain social distances and set up proper containment. Therefore, we need to use a product that is a retractable post. In almost every place we can see the retractable post, the retractable post is fully functional, simple to operate, with many advantages favored by many enterprises, today we will make an all-round analysis of its functions and advantages.