Abstract: The helicon wave, as one of the attractive ionization sources for the space electric propulsion in the future, is attracting more and more attention domestically and abroad. The piggyback experiment on a satellite for the helicon wave electric propulsion is used to validate the technology. In this paper, the structure, with the main part bearing the load, is designed and analyzed, followed by a mechanical calculation by the finite element method(FEM) to validate the rationality and reliability of the design.