In　this　paper,　we　demonstrate　a　kHz　high　energy　narrow　pulse　width　electro-optical　Q-switched　Nd:YVO4　oscillator　without　output　coupler,　the　resonator　is　composed　of　residual　reflection　from　the　pump　surface　and　a　total　reflection　mirror.　By　using　a　pulsed　fiber　coupled　LD　pump　source,　the　thermal　effects　of　Nd:YVO4　can　be　effectively　alleviated.　One　end　facet　of　the　Nd:YVO4　crystal　was　cut　at　the　Brewster　angle　to　replace　the　polarizer,　thereby　reducing　the　length　of　the　resonator.　At　a　repetition　rate　of　2　kHz,　the　laser　output　achieved　the　highest　average　power　of　1.49W　with　an　optical-to-optical　conversion　efficiency　of　17.8%　and　a　maximum　single　pulse　energy　of　0.745mJ.　Additionally,　a　good　beam　quality　with　M-x(2)=1.20　and　M-y(2)=1.24　was　obtained.　The　research　results　presented　in　this　paper　greatly　enhance　the　practical　applicability　of　the　laser　without　output　coupler,　which　can　be　utilized　as　an　oscillating　stage　in　the　MOPA　(master　oscillator　power　amplifier)　configuration.