This paper briefly introduces the principle of near net shape forming and technical characteristics of electrical additive manufacturing（EAM）. A preliminary study on the properties and characteristics of EAM08CrMo that is manufactured by EAM is carried out,which provides technological support for the application of EAM. By testing and analyzing the chemical composition,micro-structure and macro-mechanical properties of EAM08CrMo,it is verified that the properties of material manufactured by EAM,the macro-properties are well-distributed,without thickness effect and directionality. By testing and analyzing the changes of micro-structure and macro-mechanical properties of EAM08CrMo before and after thermal aging treatment,it is concluded that the effect of thermal aging treatment on microstructure and impact toughness is little,but the strength has a slightly decrease.