<p>With the intensification of global climate change and energy crisis, people’s attention to thermal comfort and low-carbon design of building environment is increasing day by day. Indoor thermal comfort not only affects the health and quality of life of residents, but is also closely related to energy consumption. Therefore, this article explores the application of low-carbon energy design in home environments through thermal comfort optimization and indoor thermal energy cycle analysis, in order to improve indoor thermal comfort, reduce energy consumption, and achieve sustainable development goals. Based on the analysis of human thermal comfort, an indoor thermal airflow organization model was constructed, and the optimization effect of thermal comfort under different design strategies was systematically evaluated. The economic benefit evaluation model and low-carbon benefit analysis are used to study the comprehensive benefits of indoor thermal energy cycling. Effective low-carbon design strategies have been proposed for different design schemes. The results indicate that the optimized organization of hot air flow significantly improves the thermal comfort of residents. The comprehensive analysis of economic and low-carbon benefits shows that a reasonable design strategy not only effectively reduces building energy consumption, but also achieves significant economic returns. Therefore, green home environment design based on thermal comfort optimization and thermal energy circulation can effectively meet the needs of low-carbon buildings and achieve a dual improvement of thermal comfort and energy efficiency.</p>