Due to the severity and complexity of the working environment, turbine blades often experience fatigue failure and fracture damage under large vibration amplitude. In order to reduce the risk of fatigue failure of turbine blades, the underplatform dampers are typically employed to suppress the blade vibration. However, most experimental studies use weights and wires to simulate the application of normal load, which cannot quantitatively and precisely apply normal load. To address this problem, this paper proposes a precise loading method for underplatform dampers. Moreover, experimental studies on the vibration reduction effects of underplatform dampers are conducted. The study investigates the influence of parameters such as normal load, excitation amplitudes, and friction area ratios on the vibration reduction characteristics of dampers. Finally, a MATLAB-Python-ABAQUS joint simulation method is used to analyze the vibration effect of the underplatform damper, which validates the effectiveness of the proposed experimental method.