Bismuth based nanoparticles (BBNs)exhibit immense potential due to unique physico chemical properties, therefore extensively applied in diverse technologies. On this account, a great deal of attention is being devoted to green synthesizing BBNs, which is an environmentally safe process, non-toxic, and stable, with a wide range of nanoscale production options. This review emphasizes the importance of green approaches for synthesizing BBNsusing bio extracts derived from plants and microorganisms. The selection of precursors, reducing agents, coating agents, solvents, quantity evaluation, and experimental conditions are all discussed in this review elaborately. Also,a consolidative account ona diverse range of applications of BBNsisbeing highlighted, along with recent breakthroughs of green synthetic technology based onthe knowledge of mechanism routes that have been available in the recent literature. Since review articles are often central points for beginners, this report leads readers to the articles that highlight the noteworthy advancement in the field of BBNs research. The goals of this study are to (i) outline advanced bismuth-based compounds that have been used to date, (ii) describe drawbacks in synthetic strategy and possible solutions, and (iii) make recommendations for future research.