Abstract: Based on the cluster analysis and SPSS principal component analysis method, from the perspective of city scale, the article selects eight evaluation factors of representative significance by taking Chuzhou City as the research area, and builds the evaluation index system of land ecological security. The purpose of the statistical analysis is to understand the situation of land ecological security in Chuzhou city and to understand the factors that affect the sustainable development of land ecology. The results showes that (1) the Langya district belongs to the first category, the ecological safety is in good condition; Fengyang County, Mingguang City, Tianchang City, Nanqiao District belong to the second category, the ecological security is to be improvement district; Quanjiao County, Dingyuan County, Laian County, designated as the third category, belongs to the ecological security in more vulnerable area. (2) the per capita GDP, the natural growth rate of population, the proportion of the loss of scale enterprises, the scale industrial added value, the energy consumption reduction rate, are the main factors affecting the land ecological security in Chuzhou city.