Abstract: Co-management demonstration of GEF project were conducted in Taibai ,Foping and Zhouzhi National Nature Reserves , Shaanxi Province as a new approach of reserve managing. According to procedures , reserves clarified objectives of co-management and established co-management committee as well as developed Community Resources Management Plan (CRMP) . Countering threats to biodiversity conservation from economic development of the community , the implementer adopted countermeasures such as publicizing and educating , investigating of community , natural resource using , extending agriculture techniques , choosing some community development programs , practicing of energy- saving techniques , expanding range of community participation and establishing resource conservation system. Some positive outputs of co-management have been achieved. Villagers have benefited especially from exploitation of fuelwood resource , popularization of agricultural technology and community development programs , meanwhile the conservation of biodiverstiy was further strengthened. The experience and demonstration of the community co-management showed its value in seeking a new reserve management model of balancing conservation and development .