Abstract: The dimensional and geometric accuracy and surface quality of complex parts produced by additive manufacturing require secondary processing because they do not meet the requirements for direct application,which restricts the further development of metal additive manufacturing technology in the aerospace industry and other fields, and additive-reduction hybrid manufacturing is the most effective solution to break through the technical bottleneck. Firstly, the principle of hybrid additive and subtractive manufacturing technology is explained, the research status of domestic and foreign additive and subtractive materials is reviewed in terms of equipment integration and process research, the process parameters and defect detection of hybrid additive and subtractive manufacturing are introduced, the key technical difficulties of hybrid additive and subtractive manufacturing are pointed out and the direction of development is indicated.