The invention discloses a vibration and noise suppression method for a high current-closed busbar bridge. The vibration and noise suppression method comprises the following implementing steps: establishing a solid three-dimensional model of a busbar bridge system, guiding the solid three-dimensional model into finite element software for grid partition and material attribute definition, establishing a finite element model of the busbar bridge system, performing modal analysis and vibration response analysis to determine busbar bridge system and vibration-related weak links and possible damageareas, and adjusting and optimizing part parameters, a structure and a mounting manner of the busbar bridge system aiming at the weak links and the possible damage areas to realize vibration suppression. The vibration and noise suppression method disclosed by the invention has the beneficial effects that the accurate calculation on the modality of the busbar bridge is the premise for vibration response analysis; on the basis, the resonance can be avoided through changing control strategies and modifying a design scheme, so that a good vibration suppression effect is obtained.