Abstract: Land system vulnerability is an important basis of making land system sustainable development policy. It has become the important part of sustainable development studying. Taking Yingjing as a case, the vulnerability was analyzed on the basis of analyzing the energy input-output by using the method of energy analysis. [Objective] The purpose is to seek suggestions and strategies for sustainable development. The results show that：①The total energy input increased from 1.36E 21sej to 2.37E 21sej, total energy output changed from 1.59E 21sej up to 1.96E 21sej; ②The land energy density, per-capital energy and environmental loading ration all have an upward trend; ③Energy input-output ration and sustainable index have a downward trend. [Conclusion] It indicated that people’s living standard of Yingjing has been improved but the environmental pressure and land system vulnerability has become more and more serious.