A driving mechanism of an electric vehicle is provided, comprisingtwopower unitsand acentral shaft. Each of the power unitsrespectivelycomprise a motor, a speed reduceroperated by the motor, and a roller connected to the speed reducer, wherein the motor comprises a main rod, a motor gear mounted at the end of the main rod, wherein the speed reducercomprises a reduction gearthat has a greater number of teeththan the motor gear to engage, an transmission rod mounted between spindle of the reduction gear and spindle of the roller, and a bearing mounted on the side of the motor gearaway from the roller. The central shaftis located on connecting linebetween spindlesof the rollers, wherein two ends of the central shaftaresleeved in each of the bearings, and each of the motorsare located on opposite sides of the central shaft.本發明提供一種電動載具之驅動機構,包含有二動力單元、以及一中央軸桿。每一該動力單元分別包含有一馬達,一受該馬達傳動之減速器,以及一連接於該減速器之滾輪,其中該馬達包含有一主桿,一設置於該主桿末端之馬達齒輪,該減速器包含有一嚙接於該馬達齒輪且齒數大於該馬達齒輪之減速齒輪,一設置於該減速齒輪及該滾輪軸心處之傳動桿,以及一設置於該馬達齒輪遠離該滾輪一側之軸承。該中央軸桿設置於每一該滾輪軸心連線位置上,兩端分別套設於每一該軸承,且每一該馬達設置於該中央軸桿之相對兩側。100‧‧‧電動載具之驅動機構10‧‧‧動力單元11‧‧‧馬達13‧‧‧滾輪20‧‧‧中央軸桿30‧‧‧底盤單元31‧‧‧萬向輪32‧‧‧架體321‧‧‧平台322‧‧‧托持桿40‧‧‧電控單元41‧‧‧傳輸線
