This study adopts the criterion of maturity for adaptive co-management raised by Berkes et al. (2007), to analyze case studies of the Wu-wei-kang Wildlife Refuge and its surrounding communities,Kending National Park and Shir-ding tribe, Taroko National Park and Da-Tung and Da-Li tribes, and Lunpi Tribe and forestry agencies on developing co-management on forest lands, for the status and future visions of co-managing protected areas between local residents and management authorities of natural resources in Taiwan. The results show that there is high maturity of adaptive co-management for the Wu-wei-kang Wildlife Refuge to use the participatory workshop in its management; it can achieve middle agree for the She-Ding tribe to develop the ecotourism program in Kending National Park though involved little in policy-making on park management; the co-management mechanism between the Taroko National Park and Da-Tung and Da-Li tribes belongs to preliminary stage since there isn’t clear policy and the tribe organization cannot work well; there are some items achieving middle maturity for the case of Lun-pi tribe since its high self-organization, smooth operation and good connections with outsides no matter still on negotiation processes. Learning from these four case studies, it is possible to implement co-management with the local communities to some degree under the circumstances which are not directly involved in policy-making on management, and that the authorities can accept and the local communities can develop, such as ecotourism development, while there isn’t any compulsion by current legislations in Taiwan.