Electrical additive manufacturing（EAM for short）is a kind of additive manufacturing

that melt the metal wire by arc heat and resistance heat. Due to the unique technical characters

it is the preferred additive manufacturing technology for large metal component. This paper briefly introduced the technical principle and characters of electrical additive manufacturing. Analyzed the macro-profile

micro-structure and mechanical property of the metal that produced by EAM. At the same time

briefly introduced the advantage of EAM to large metal component

the focus of attention was put forward for the development of EAM.