Abstract: Development of sustainable forest management index systems for different forest management units is the foundation for realization of forestsustainable management.This article, based on Erdos Forest Farm management practice and using the target method and ex pert consultancy, gives a description on a forest farm-level sustainable forest management index system which contains 30 indicators at 4 levels.Then the current condition of Erdos Fo rest Farm has been appraised with the index system, The resultshows that the comprehensive index is 0.778, The tendency of the management is basically sustainable.The key factors of forestsustainable management are found according to the appraisal. Those factors include forest ecosystem diversity indices, utilization rate of forest land, unit area increment growth of forest land, annual incidence rate of pests and rat disasters of forest and soon.

Key words: forest, sustainable management, index system, appraisal