The article reviews the production of second-generation bioethanol from lignocellulosic agricultural wastes, emphasizing the recent advances in pretreatment, cellulase production, and ethanol fermentation processes. It highlights the environmental and economic benefits of using renewable biomass resources, such as agricultural residues, for bioethanol production. The review covers the structural organization of lignocellulosic feedstocks, the enzymatic saccharification process, and the optimization of culture conditions for cellulase production. It also discusses the integration of saccharification and fermentation processes, as well as the economic considerations for cellulosic ethanol production. Despite the promising results, the article identifies several challenges, including the cost of feedstock and enzymes, efficient pretreatment technology, and the development of more efficient enzyme blends. The conclusion emphasizes the potential of lignocellulosic biomass as a sustainable and cost-effective source of bioethanol.The article reviews the production of second-generation bioethanol from lignocellulosic agricultural wastes, emphasizing the recent advances in pretreatment, cellulase production, and ethanol fermentation processes. It highlights the environmental and economic benefits of using renewable biomass resources, such as agricultural residues, for bioethanol production. The review covers the structural organization of lignocellulosic feedstocks, the enzymatic saccharification process, and the optimization of culture conditions for cellulase production. It also discusses the integration of saccharification and fermentation processes, as well as the economic considerations for cellulosic ethanol production. Despite the promising results, the article identifies several challenges, including the cost of feedstock and enzymes, efficient pretreatment technology, and the development of more efficient enzyme blends. The conclusion emphasizes the potential of lignocellulosic biomass as a sustainable and cost-effective source of bioethanol.