Abstract: In order to solve the problem that the existing basic model could not fully express radio propagation characteristics under some typical scenarios (such as sea, mountains, hills and urban), a unified radio propagation model under many typical scenarios was established based on deterministic parabolic equations. Firstly, different typical scenarios were equivalent to lossy dielectric layers to compute the boundary conditions. Then, the corresponding results were solved by Fourier split step algorithm. Finally, radio propagation loss under typical radio scenarios was calculated. After theoretical analysis and experimental verification, the uniform radio propagation model under different transmission scenarios is compared with Miller-Brown model and ray tracing model, the results are in good agreement. The results are helpful to establish a unified radio propagation model under typical radio scenarios to solve the problem of radio propagation loss.