In order to study the response characteristics and the vibration control of submerged floating tunnel (SFT) structure, according to the parameter value in previous analysis and calculation, the finite element numerical analysis based on solid element modeling was carried out to obtain the positions of the peak displacement and stress of SFT structure under static and seismic conditions respectively. After that, based on the response results of numerical analysis, the design scheme of vibration control for SFT structure under seismic action was studied, and the parameter sensitivity analysis for vibration reduction effect of SFT was carried out. The results show that the peak displacement of SFT appears in the middle of the span and the peak stress is concentrated at the supporting end under static and dynamic conditions. The vibration control scheme has a good weakening effect on the peak displacement and the peak stress of SFT. The number of dampers and the yield loads are the main factors affecting the vibration reduction effect of SFT dynamic response peak value, which has some reference value for the design and research of vibration control of submerged floating tunnel engineering.