Abstract: With the title of “Transmission tower structural design and model production” in the 18th Zhejiang Province College Student Structural Design Competition as the background, this paper studies the force and structure form selection of transmission tower structure under the dynamic load of broken wire. In the scheme stage, the advantages and disadvantages of different structures are analyzed; and the concept of vibration mitigation and isolation is integrated for design: the head and the main body are detached and the circular pressure groove orbit is cleverly set as the vibration isolation device, energy dissipation and vibration mitigation by rotating the head along the track for friction, which is innovative. Through the experimental verification, combined with analytical calculation and SAP2000 software calculation analysis, it is concluded that the circular orbit vibration mitigation and isolation device can effectively reduce the dynamic effect of the structure and improve the safety reserve of the main structure. The purpose is to provide practical and theoretical experience guidance for similar competition models and related practical projects.