According to "Technical Criterion for Ecosystem Status Evaluation" issued by State Environmental Protection Administration, on the basis of Arcgis platform, using the comprehensive evaluation index method, the paper takes Dongsheng district as a case, selected biological richness index, vegetation coverage index, land stress index, water network denseness index and pollution load index to evaluate the quality of ecological environment. The evaluation result shows that the ecological environment quality of Dongsheng district is "normal", the degree of vegetation coverage is moderate, the biological diversity is general, and it is suitable for human to live, but sometimes exist restrictive factors limit human existence. The ecological index value increased from 52.06 of 2005 to 53.11 in 2014, and land ecological environment quality of Dongsheng district has rising trend from the overall view, but the amplitude variations in the ecological environment condition has no obvious change, land ecological environment is good, the land ecosystem structure is complete, and its function is basically perfect.

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On the basis of Press-State-Response framework model to build land ecological security assessment index system, this paper takes Dong Sheng district as the case, applied the difference value method, by the use of entropy weight to determine the weight, the land ecological security index were calculated, and then evaluated land ecological security of Dong Sheng district During 2005-2014.The results show that comprehensive value of land resources ecological security was 0.3919 in 2008, while it is 0.3496 in 2011, the land ecological safety is in a "sensitive level", which is in "good grade" in 2014, at the value of 0.5674, with an obvious increase. In all comprehensive assessment indexes, the Land ecological pressure index has highest rate of contribution, which is indicating that the improvement of land ecological security of Dong Sheng is mainly rely on land desertification rate and urbanization rate.