Cap hoop enabling safety helmet to be worn normatively and using method

The invention relates to the field of safety protection of building construction, in particular to a cap hoop enabling a safety helmet to be worn normatively. The cap hoop comprises a cap hoop body, atelescopic section, a tension rope and a lower jaw tying belt, and is characterized in that the cap hoop body is made of an elastic material; a fastening section at the rear of the cap hoop body is of a rhombic network chain telescopic structure and utilizes the recovery performance of the elastic material to be adapted to cling to a head. According to the cap hoop, a traditional rack snap jointadjusting device is cancelled, the cap hoop is greater than the head circumference of a wearer when the cap hoop is completely loosened, it is impossible to ensure good contact between the safety helmet and the head by adjusting the cap hoop only, and the safety helmet cannot be steadily worn on the head, so that the wearer has to adopt next action to realize normal wearing. 本发明涉及建筑施工的安全防护领域，具体是种促使安全帽规范佩戴的帽箍，包括帽箍本体、伸缩段、拉紧绳