Helmet and shared electric bicycle

The utility model relates to the technical field of shared bicycles, in particular to a helmet and a shared electric bicycle. The helmet comprises a helmet shell, a helmet buffer layer which is laid and fixedly connected with the inner side of the helmet shell in an attached mode, and a tether assembly with the two ends connected to the two opposite sides of the helmet shell respectively. At least one helmet magnetic attraction part is embedded in the helmet buffer layer, correspondingly, at least one tether magnetic attraction part is arranged on the tether assembly, and the tether magnetic attraction part can be attracted to the helmet magnetic attraction part, so that the tether assembly has a first storage state and a second use state. The shared electric bicycle applies the helmet. 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 sa