Trehalose plays an important role in plant metabolism,growth,development and stress resistance.The gene for trehalose-6-phosphate phosphatase(TPP)is crucial for the biosynthesis of trehalose.Soybeans,an impor-tant legume crop,are rich in protein and oil in their seeds,and there have been few reports on their TPP gene fami-ly.To analyze the structure and function of TPP genes in soybeans,15 GmTPP genes were identified using bioinfor-matics methods across the entire soybean genome.Phylogenetic analysis indicated that these 15 GmTPP genes could be categorized into three subfamilies,with each GmTPP containing 9-11 introns,and the number of introns being the same within the same subfamily.Analysis of cis-acting elements suggested that GmTPP genes were involved in plant hormone and environmental stress responses.Furthermore,we utilized transcriptome data to study the expression pat-terns of these GmTPP genes in different tissues and their expression characteristics under various abiotic stresses.The results showed that GmTPP genes had specific expression patterns in all soybean tissues and organs and exhibited dif-ferent expressions under salt and drought stress treatments.This study not only lays the foundation for revealing the role of the GmTPP gene family in the regulation of trehalose in soybeans but also provides some reference value for impro-ving soybean stress resistance using the TPP gene family.