Biodiversity surveys and research are the basis for environmental management from indicators, while bioenvironmental impact assessment is the most crucial approach for Taiwan's environmental conservation at current stage. According to Article Four of the Environmental Impact Assessment Act: ＂Environmental impact assessment means an environmental management plan based on scientific, objective and comprehensive surveys, forecasting, analyses and evaluations conducted prior to project implementation in order to determine the degree and scope of the potential impact of development activity or government policy on the environment (including the living environment, natural environment and social environment), economy, culture and ecology, and the public explanation and review of such a plan＂. Among them, ecological impact refers to the influences on the creatures whose foraging, habitats, and breeding environments, as well as their community sizes. The composition of the species turns variations which was led an impact by environmental changes. Among them, spatio-temporal changes, resulting in biological competition and cooperation in ecosystems, finally achieve a dynamic imbalance. Meanwhile, strong creatures could dominate the entire system, vulnerable species, thus, could be leading to become local extinction. Therefore, this imbalance would be related to their in-situ environment, the composition of species, as well as their nutrition status. Bio-impact assessments should assess ecosystems, species, and genetic projects. This assessment approaches should be based on population size, structural changes, and cumulative environmental processes (i.e., habitat sizes, geography, and chemical information) as the basis for environmental evaluation, investigation, and monitoring. Therefore, we tried to establish several approaches to benefit bioenvironmental impact assessment, encouraged government to review specifications and ecological environment database, conducted surveys, defined the list of endangered species, evaluated the levels of endangered species, assessed the extent of damage to habitats, and conducted bioenvironmental experts' consults to effectively carry out integrated assessment provides toward sustainable development within healthy ecosystems.