Abstract: As a typical metamaterial, negative Poisson's ratio structures have been widely used in aerospace, automotive, and other fields due to their unique deformation mechanism and energy absorption characteristics. However, there is relatively little research on its vibration damping characteristics. Research on the development of multifunctional negative Poisson's ratio structures with simultaneous excellent load-bearing, energy-absorbing and vibration-damping properties is even more scarce. Inspired by the star-shaped and inner-concave negative Poisson's ratio structure, a novel chiral negative Poisson's ratio structure is proposed. Four configurations with different geometric parameters are designed and prepared by 3D printing technology. In the previous study, it has been found that the novel structure exhibits excellent static properties and energy absorption characteristics. Based on this, the damping performances of novel structures are demonstrated by combination of experiments and numerical simulations, which are compared with that of the conventional non-chiral negative Poisson's ratio structure. The results show that the stronger the negative Poisson's ratio effect of novel chiral negative Poisson's ratio structure, the better the vibration damping performance. The results and laws can provide theoretical guidance for the design of the novel chiral negative Poisson's ratio vibration damping structure.