Abstract: Under the condition of increased surface albedo which has arisen from aridness in recent years in Tibetau Plateau, a sensitivity study on climatic effect of surface albedo change is completed with a two-level general circulation model. Meanwhile, the model results are compared with actual climatic variation from observation in China in the last forty years. The results show that the increase of surface albedo in the main part of Tibetan Plateau is one of the important factors in controlling China's short-term climatic variation.When the surface albedo is increased above 3000m in Tibetan Plateau summer monsoon weakens remarkably, the temperature rises in the north part and falls in the south part of eastern China,and monsoonal rainfall is decreased generally.