Bio Mimic Architecture its impact on sustainable design is one of the trends and responsible thought to maintain ecological balance in light of the phenomena that threaten the world of global warming and ecological imbalance resulting in extinction, and accordingly, the research discusses the impact of nature simulation trend on architecture and its impact on the sustainability of the urban environment, and then elicit An evaluation model for simulating nature architecture through the levels of simulated design of the formal and functional nature, which aims to measure and evaluate projects and the extent to which they simulate nature through compatibility with the principles and ideas of simulating nature architecture, then the practical application of the evaluation model to measure simulated nature architecture on some projects that were selected as a sample for study and application After studying it through the measurement indicators deduced in the theoretical part, then the research ends with a comparative analysis of the selected projects with the aim of knowing the most simulating nature and using it as a measurement model for environmental projects in the Arab region.