Abstract: By using the data of the third desertfication investficatiom and monitoring planning of Shandong province and corresponding climatic data during 1960～2005 of Liaocheng, this paper analysed climate factor’s feature and its impacts on land desertfication. The results of this study are as follow: (1) The land desertfication of Liaocheng is highly associated with the change of climatic factors. Land desertfication positively correlated with temperature and wind speed and days, and had complex relationship with the amounts of precipitation and evaporation. (2) Compared with other seasons, spring, with high temperature, low precipitation, high evaporation and strong wind, is the main factor influencing land desertfication in Liaocheng.