Building envelopes are a key element of green building design due to the immense amount of building energy and consumables. However, the quantitative evaluation of the embodied environmental impact of the envelope structure in green buildings is limited. This study aims to minimize the embodied environmental impact of the envelope structure. First, the types of embodied environmental impacts are classified into 12 categories (global warming, ozone depletion, eutrophication, smog, acidification, criteria air pollutants, indoor air quality, human health, ecotoxicity, habitat alteration, water intake, and fossil fuel combustion) using the causal network method and the equivalent factor method. Second, a quantitative model for evaluating the embodied environmental impact is developed based on the distance-to-target approach. Third, a green building in Jiangsu Province, China, is used as a case to form a green building envelope technology checklist by considering building envelope design principles. Building for Environment and Economic Sustainability (BEES) software is used to calculate the life cycle environmental impact inventory and embodied environmental impact. Furthermore, C# programming language is used to select 25 green building envelope packages with minimal environmental impact. This study offers an indepth understanding of the embodied environmental impact of green building envelope. The developed model not only calculates the accurate embodied environmental impact of green building but also provides an effective platform for identifying and determining the best building envelope structure to minimize the environmental impact of green buildings.