Xue, Y., Ma, J. and Chen, X., 2013. High-order high-resolution Radon transform for AVO-preservation multiples attenuation. Journal of Seismic Exploration, 22: 93-104. Multiple attenuation and primary energy preservation are important for seismic data processing. Sparse Radon transform can reduce smearing and separate primaries and multiples quite well. But when the primary amplitude varies abruptly, multiple attenuation by sparse Radon transform will be degraded, and the energy of primaries will be distorted. To remediate this problem, we propose a high-order high-resolution Radon transform. Radon transform only performs summation along linear, parabolic or hyperbolic events. Our method incorporates event summation with orthogonal polynomial transform, and meanwhile obtains the gradient and curvature of events. This information will improve resolution of Radon transform in situations where amplitudes vary abruptly with offsets. The high-order Radon transform takes advantages of Radon transform and orthogonal polynomial transform, which will attenuate multiples while preserving AVO information of seismic data. Synthetic data examples show that high-order Radon transform is successful in multiple attenuation and AVO preservation.