Based on the solar radiation calculation model,the solar radiation received on the roof and vertical walls in different directions of a typical building in the Changsha City was calculated through computer program and analyzed in this paper.The main results are as follows: In Changsha,the solar energy radiation received by the roof of the building is the largest,When the azimuth angle between –45° and 45°,the solar radiation received by the facade of building is large too,the solar radiation received by the remaining walls is obviously smal...