The hybrid manufacturing technology of additive and subtractive which is one of the important methods of integral forming complex metal components,have the advantages of high forming speed,high material utilization rate and forming complex structure in additive manufacturing and the advantages of high quality and accuracy in machining. This paper introduces the technology of additive and subtractive hybrid manufacturing as well as its current research situation both at home and abroad from two aspects of equipment integration and forming process. The study analyzes the mechanical properties,forming method and integration way of additive and subtractive equipment,mainly focuses on path planning and optimizes process parameters in hybrid manufacturing. Finally,points out the future research direction of additive and subtractive hybrid manufacturing equipment and forming process.