Abstract: Indicator 15.1.2 of the United Nations 2030 Sustainable Development Goals (SDGs) cannot be effectively applied to county-scale assessments due to the scale and availability of the metadata. In order to solve this problem, a set of assessment indicator system for biodiversity was constructed by using remote sensing data and methods, it considered the connotation of biodiversity, based on the consideration of county scale calculation. The results show that the implementation of SDG 15.1.2 in Deqing County was good, and the biodiversity index could effectively monitor the status and changes of biodiversity at County scale. This study is helpful for calculating and evaluating the progress of implementation of SDG 15.1.2, and provides precise reference information for grassroots administrative regions to achieve sustainable development goals.