Magnetopause is the boundary of the Earth's magnetosphere that separates the magnetospheric plasma from solar wind. Investigating the location of magnetopause can improve our understanding on the interaction between solar wind and the Earth's magnetic field. However, it is difficult to obtain large-scale magnetopause motion from the current in situ spacecraft measurements due to the sparse observation points. X-ray imaging is an appropriate technique to study the large-scale motion of magnetopause in response to solar wind variations. Indeed, at the magnetopause, X-ray emissions are generated by charge exchange reactions between multiply charged heavy solar wind ions (O7+, O6+, C5+, ...) and the hydrogen geocorona. Recently, the Solar Wind-Magnetosphere-Ionosphere Link Explorer (SMILE) mission has been proposed to remotely image the magnetopause with the onboard Soft X-ray Imager (SXI). In this study, we simulate the soft X-ray emission around the Earth by using the Test-Particles (TP) model, with the electric and magnetic field from OpenGGCM and PPMLR MHD approaches as its input. The soft X-ray emissivity maps derived from TP model with two different MHD inputs are presented. The X-ray maps derived from a pure MHD approach is proportional to proton fluxes and is based on an average coefficient to describe the heavy ion distribution. These results are compared with our TP results which calculates individual contribution for ion species allowing to study the kinetic effects and the individual spectral characteristics.