Abstract: The utilization of additive manufacturing has made it easier to manufacture intricate titanium alloy components, consequently leading to their widespread adoption in fields like aviation, aerospace, and shipbuilding. The unique thermal-mechanical coupling effect of hot isostatic pressing allows it to improve the microstructure and eliminate internal porosity defects in components, which is why it is gradually being used for the organizational performance control of additive manufacturing parts. In this study, a concise overview of the microstructure, defects, and performance of additive by manufactured titanium alloy parts is carried out, as well as the advantages of hot isostatic pressing over traditional heat treatment techniques in terms of microstructure, defects, and performance regulation. The study discovery lays the groundwork for employing hot isostatic pressing technology in the post-treatment procedure of titanium alloy parts produced by additive manufacturing.