Abstract: To solve the problem of the composite electromagnetic scattering from super-low altitude target on the earth surface, the cruise missile is regarded as the typical example of super-low altitude target. The scattering characteristics of earth surface in different types of soil and cruise missile are analyzed. Considering the ingredient of different types of soil, the permittivity of it is calculated by using four component models. And the relationships between the permittivity and the soil components and moisture are analyzed. The 2D Gaussian rough surface model is generated to simulate the real earth surface. The tapered incident wave is applied to eliminate the edge diffraction. The effects of soil components, the frequency and polarization of the incident wave on the earth surface scattering characteristics are analyzed by using PBTG/ SMCG algorithm. Based on the surface integral equation on scattering between target and environment, the composite electromagnetic scattering from cruise missile and different types of soil rough surface is analyzed. The analysis shows that the mutual effects between the cruise missile and the rough surface result in the increase of the scattering coefficient of the three types of soil rough surface. The results of this paper have a theoretical support for different types of soil rough surface remote sensing and super-low altitude target detecting.