Objective <p>To deal with the challenge of broadband vibration suppression in finite-size structures and reduce the negative impact of traditional acoustic black hole design on the bearing capacity and surface geometry of beam structures, two metamaterial structures based on embedded acoustic black hole resonators are proposed in this paper.</p> Methods <p>Two structures of embedded acoustic black hole(E-ABH) and double-layer embedded acoustic black hole(DE-ABH) are designed. Using the finite element method, the influence mechanism of the resonator length and material parameters on the position and width of the vibration band gap is systematically studied. Finally, the broadband vibration reduction performance of the structure and its attenuation effect on the external impact load are verified by experiments.</p> Results <p>The double-layer embedded acoustic black hole structure obtains a significantly broadened vibration band gap, whose width is 1.4 times that of the embedded acoustic black hole structure, and the maximum transmission loss is-60 dB. Increasing the length of the resonator can make the band gap move to the low frequency, and coupling multiple lengths can further broaden the band gap. By using the hybrid resonator strategy made of different materials, the band gap width can reach 2610 Hz, which is expanded to 1.2 times of the single material design. Experiments show that the double-layer structure embedded with different material resonators achieves vibration suppression below-20 dB in the band gap from 1500 Hz to 3500 Hz.</p> Conclsion <p>In this study, through the design of embedded resonators, the broadband vibration control is realized by effectively combining local resonance and acoustic black hole effect without changing the external geometry of the structure. The research results provide valuable insights and experimental basis for lightweight and embedded broadband vibration reduction metamaterial design.</p>