Abstract: Metal-multiphase composites with interpenetrating network structures not only retain the material properties of each constituent phase but also achieve a synergistic improvement in performance through the interpenetrating structure. Through the friction and viscoelastic effects of the internal phases, these composites can effectively dissipate energy under cyclic loading, demonstrating excellent damping performance and broad application prospects in engineering vibration reduction. This paper reviews the research progress of the existing three types of metal-multiphase composites with interpenetrating network structures, including ceramic/metal, metal/metal, and polymer/metal composites. On this basis, the preparation processes (melt infiltration method, metal substitution method) and main properties (compression and energy absorption performance, damping performance, and sound absorption and noise reduction performance) are elaborated. Taking polymer/metal materials as an example, the application of metal-multiphase composites with interpenetrating network structures in engineering vibration reduction is introduced, and the existing problems and future research trends are analyzed and prospected.