Based on the lever principle, a novel horizontal universal damping amplification device (HUDAD) is proposed, and its construction and working mechanism are systematically elaborated. The calculation formula for the restoring force of the HUDAD is derived according to mechanical structural principles. The displacement amplification effect and the accuracy of the restoring force model are verified through quasi-static tests. Furthermore, a finite element model is established in ABAQUS to conduct a systematic parametric analysis of the hysteretic performance of the HUDAD, investigating the effects of loading frequency, displacement direction, and displacement amplification coefficient on the overall energy dissipation characteristics of the device. The research results indicate that the HUDAD possesses critical displacement amplification capability and outstanding energy dissipation performance, with high consistency between the experimental and theoretical hysteretic curves. The device exhibits notable frequency dependence, with the damping force increasing with the loading frequency. By analyzing the hysteretic performance of the HUDAD under different loading directions, displacement amplification coefficients, and damper layout configurations, the horizontal multidirectional energy dissipation capacity of the HUDAD is verified, confirming its effectiveness in improving damper utilization efficiency.