Abstract:Yeast is a valuable host organism for protein, chemical, and plant natural product production in metabolic engineering. The development of neutral sites in yeast holds great significance for the construction and optimization of efficient cell factories. This review summarizes the screening standards, characterization methods, influencing factors, and applications of neutral sites in synthetic biology. Additionally, it discusses the future research directions, providing theoretical support and practical guidance for the construction and optimization of yeast cell factories utilizing neutral sites.