This paper proposes a reflective anisotropic coding metasurface for multifunctional terahertz wavefront control. By integrating vanadium dioxide (${\mathrm{VO}}_2$), the design realizes multistate precise beam manipulation within a shared aperture. The $27\times 27$ unit cell array provides distinct reflection phase responses for two orthogonal linear polarizations. In the metallic state, it generates two and four reflected beams under $x$- and $y$-polarized incidence at 1.2 THz, respectively. Conversely, as ${\mathrm{VO}}_2$ switches to the insulating state, the metasurface generates zero-order Bessel beams at 1.6 THz. The $x$-polarized channel produces an on-axis beam, whereas the $y$-polarized channel produces a beam with a designed deflection angle of $25°$. Combining radial and linear phase gradients enables control of Bessel beam formation and deflection. Full-wave simulations show a well-defined central lobe and quasinondiffracting propagation over the designed range. The proposed design synergizes ${\mathrm{VO}}_2$ reconfigurability with polarization multiplexing, thereby enabling diverse beam manipulation functions on a single metasurface platform.

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• Metal-insulator transition
• Optoelectronics
• Polarization of light
• Spatial profiles of optical beams
• Metasurfaces
• Strongly correlated systems
• Transition metal oxides
• Terahertz techniques