High-density energy field manufacturing technology is a hot topic in recent advanced manufacturing technology. Vibration,laser,electric,heat,magnetic of high density are applied into machining zone to perform or assist material removal. Magnetic field assisted manufacturing technology is pioneered in 1960. This technology could be more and more popular due to the in-situ heat elimination and active control of residual stress. The researches focused on magnetic field assisted manufacturing technology are reviewed in the items of magnetic effect in the machining process,magnetization of cutting tool/workpiece materials,transition mechanism among magnetization,heat and material deformation. The improvement direction of magnetic field assisted manufacturing in the future is proposed.