TC4 titanium alloy has a wide range of applications in various fields worldwide due to its excellent properties. However, with the development of marine ships, aerospace and other technologies, the size of TC4 alloy components is becoming increasingly larger, and traditional casting and forging manufacturing technology and new additive manufacturing technology have difficulty meeting the processing requirements of near net size, low cost and high efficiency of TC4 large components, so hybrid manufacturing technology combining the advantages of these two types of manufacturing technology came into being. At the same time, to solve the problems of microstructure defects and anisotropy of additive manufacturing TC4 titanium alloy, a hybrid manufacturing technology combining online rolling and additive manufacturing was proposed. Based on the existing domestic and foreign data, the characteristics of hybrid manufacturing technology of TC4 titanium alloy were compared, and the structure and performance characteristics of TC4 alloy components and the  influencing factors were summarized. The existing problems and development direction of the technology were also put forward, providing references for the research and development of TC4 titanium alloy hybrid manufacturing technology. Key words ： TC4 titanium alloy; hybrid manufacturing; additive manufacturing; microstructure and property