As global challenges such as climate change, resource depletion, and social to identifying the key factors that drive progress in this area, researchers can contribute to the development of evidence-based policies and interventions that promote sustainable, equitable, and inclusive development. Despite the importance of human development, it remains a relatively underexplored area of research, highlighting the need for continued inquiry and innovation in this field. This study contributes to the growing literature by pioneering a study on governance, economic growth, economic complexity, environmental quality, biomass energy, and human development in BRICS-T countries between 1991 and 2019. Advanced econometric models are apply, A continuouslyupdated and fully-modified and continuously updated biased correction approach. For sensitivity analysis, this employs common correlated effects mean group, pool mean group, and fully modified ordinary least square, dynamic ordinary least square. According to the empirical findings, effective governance, economic growth, and biomass energy promote human development in BRICS-T countries. However, economic complexity and environmental quality negatively impact human development. Cleaner manufacturing minimizes emissions and ensures a healthy environment. BRICS-T economies must reduce carbon emissions and use renewable energy more to preserve the ecosystem and improve citizens' quality of life.