Abstract:On the basis of analyzing the connotation of land ecological system security, taking Feicheng city as the study area and choosing 24 indicators, the evaluation index system of land ecological system security has been set up. By using entropy and aggregative index number method, combining with GIS technology, present condition of land ecological system security in Feicheng city from 2000 to 2013 has been analyzed. It is showed that security situation of the land ecological system in fourteen years has been fluctuating. Land ecological system security is facing a lot of pressure. Thus, relative countermeasures for enhancing security situation of the land ecological system has been put forward.