Statistical data often participate in the audit of economic, social and ecological dimensions as basic data, but it can not accurately depict the differences between fine-grained regions, so the impact of space on audit results is often ignored. Based on spatial data and statistical data, this paper comprehensively considers the differences of natural environment between regions, and introduces ecological sensitivity and ecosystem service value to audit ecological benefits, which is a new research idea. This paper uses GIS technology to grasp the characteristics and changes of land use and ecosystem service value from space-time dimension on the basis of eco-sensitive zoning. The results showed that the ecosystem service value of waters in highly and extremely sensitive regions increased significantly, the ecosystem service value of cultivated land in mildly sensitive regions decreased, the ecosystem service value of unused land in mildly and highly sensitive regions remained stable, and the ecosystem service value of other sensitive regions decreased. The results showed that the ecosystem service value of waters in highly and extremely sensitive regions increased significantly, the ecosystem service value of cultivated land in mildly sensitive regions decreased, the ecosystem service value of unused land in mildly and highly sensitive regions remained stable, and the ecosystem service value of other sensitive regions decreased. The decrease of ecosystem service value makes ecological security unstable.