Helmet and shared electric bicycle

The utility model relates to the technical field of shared electric bicycles, in particular to a helmet and a shared electric bicycle. The helmet comprises a helmet shell and a tether assembly connected to the helmet shell, a first rotary fixing seat and a second rotary fixing seat are arranged on the two opposite sides of the helmet shell correspondingly, and the tether assembly comprises a tether body with the two ends rotationally and fixedly connected with the first rotary fixing seat and the second rotary fixing seat correspondingly. By rotating the tether body, the tether assembly has a first state of storage and a second state of use. The helmet and the shared electric bicycle solve the technical problems that a helmet tying rope of an existing shared electric bicycle is scattered and placed, is irregular and unsanitary, and affects public use and riding safety. 本申请涉及共享电动车技术领域，尤其涉及一种头盔及共享电单车。头盔包括头盔外壳及连接于头盔外壳上的系绳组件，头盔外壳的相对两侧分别设有第一旋转固定座和第二旋转固定座，系绳组件包括两端分别与第一旋转固定座和第二旋转固定座旋转固定连接的系绳主体，通过旋转系绳主体使系绳组件具有收纳的第一状态