Aiming at the vibration problem of rotating pre-twisted beams in engineering， an effective modeling method is proposed to study their vibration characteristics. Rotating experiments are designed to verify the accuracy of theoretical research. By adjusting the boundary spring stiffness， different boundary conditions are simulated. The displacement field is expanded using the modified Fourier series method， and the motion equation of the rotating beam is derived using the Rayleigh-Litz method. Based on the theo retical research， vibration tests of rotating straight beams and pre-twisted beams with different sizes are designed. The accuracy of this method is verified by comparing the theoretical calculations with finite element simulations and experimental results. The possi bility of elastic boundaries is also verified through error analysis. The results show that the natural frequency of the beam increases with the increase in rotating speed and thickness. The increase in pre-twist angle has a minimal effect on the first-order natural fre quency but significantly reduces the second-order natural frequency.