This conference paper conducted an experimental investigation of a hybrid damper with multi-stage energy dissipation mechanisms (HD-MSEDM), which incorporated a steel slit plate and resilient slip friction device. Firstly, the concept of the HD-MSEDM was introduced. A proof-of-concept test specimen was employed in an experimental programme to examine the hysteretic behaviour of the HD-MSEDM. Experimental results demonstrated that the HD-MSEDM exhibited multi-stage energy dissipation mechanisms and a stable hysteretic energy dissipation capacity. Furthermore, a detailed nonlinear finite element (FE) model was developed to further understand the behaviour of the HD-MSEDM, and the rationality of the modelling techniques was validated by the experimental results. Finally, a parametric study was performed to assess how variations in the steel slit plate’s geometry influence the hysteretic response of the HD-MSEDM. The results demonstrated that the HD-MSEDM’s hysteretic response can be tailored by modifying key design parameters, providing design flexibility for practical applications.