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Ethylene has an important role in regulating plant growth and development as well as responding to adversity stresses. The 1-aminocyclopropane-1-carboxylate synthase (ACS) is the rate-limiting enzyme for ethylene biosynthesis. However, the role of the <i>ACS</i> gene family in wheat has not been examined. In this study, we identified 12 <i>ACS</i> members in wheat. According to their position on the chromosome, we named them <i>TaACS1</i>-<i>TaACS12</i>, which were divided into four subfamilies, and members of the same subfamilies had similar gene structures and protein-conserved motifs. Evolutionary analysis showed that fragment replication was the main reason for the expansion of the <i>TaACS</i> gene family. The spatiotemporal expression specificity showed that most of the members had the highest expression in roots, and all <i>ACS</i> genes contained W box elements that were related to root development, which suggested that the <i>ACS</i> gene family might play an important role in root development. The results of the gene expression profile analysis under stress showed that <i>ACS</i> members could respond to a variety of stresses. Protein interaction prediction showed that there were four types of proteins that could interact with TaACS. We also obtained the targeting relationship between <i>TaACS</i> family members and miRNA. These results provided valuable information for determining the function of the wheat <i>ACS</i> gene, especially under stress.