Abstract: Metal honeycomb, as a thin-walled porous structural material, has the advantages of light weight, energy absorption, high strength and rigidity, and is widely used in aerospace, automotive industry, construction industry and other fields. However, its special structure leads to relatively low shear strength, which causes clamping difficulties and increases the machining difficulty. Although the current traditional processing research has achieved certain positive processing results, there are still some limitations, which can easily lead to the collapse and deformation of the honeycomb core wall as well as burr generation. In order to solve these problems, practical machining demands and technological innovations have promoted the vigorous development of ultrasonic vibration-assisted machining and other electrochemical composite machining technologies. The application of these technologies can effectively reduce the cutting force, inhibit the core wall deformation and burr generation, and significantly improve the machining quality. The development history and research status of metal honeycomb machining technology in the past decades are reviewed, and provides a systematic overview of the traditional machining technology, ultrasonic vibration-assisted machining technology and other composite machining technology for metal honeycomb materials. It introduces the processing mechanism, theoretical model, simulation and experimental analysis, and compares the advantages and disadvantages of various processing technologies. Meanwhile, the current research difficulties and future research directions are outlined, which will help to promote the development of processing technology and the application of difficult-to-machine materials.