In rugged area, the solar radiance is accepted by the sensor after a complicated interactive process between solar incidence, atmosphere and earth surface target. In this paper radiance received by one earth target is analyzed. Solar direct radiance, sky diffuse radiance and background terrain reflective radiance were obtained using a fit model. Combined with radiative transfer code and bi-directinal reflectance factor, atmospheric and topographic effects of Landsat/TM that covers Jiangxi rugged area had been eliminated. Several criterions were taken as the correction result validation. This paper shows that the method has robust atmospheric and topographic correction ability.