It is known that the ion channel can limit the radial expansion of the electron beam during long-range propagation in the plasma environment. Previous research typically concentrated on the interaction between the beam and plasma, but research on the establishment and transient properties may lay the foundation for understanding and using the ion channel during long-range propagation. In this study, a series of 2D particle-in-cell simulations is performed and an analytical model of ion channel oscillation is constructed according to the single-particle-motion. The results show that the ion channel established by relativistic electron beam in the plasma continues to oscillate periodically during the long-range propagation of relativistic electron beam. The beam electron density, initial beam radius and the plasma density can influence the dynamics of the ion channel oscillation. Choosing suitable beam parameters based on the various plasma environment can contribute to the improvement of the stability of the ion channel and further the beam quality.