A kind of mowing disk structure-improved of power-operated mower, system includes a turntable and a knife rope, turntable has flat ontology, body surface is provided with the interconnecting piece to connect driving device, one side surface of ontology what interconnecting piece is recessed with groove, knife rope is equipped in groove, and make knife rope through the side surface for going out ontology, and ontology what knife rope with respect to side surface be fixed with weight element, so that produced resistance reduces when mowing disk what uses, and then battery volume can be reduced and extend battery uses the time.一種電動割草機之割草盤改良結構，係包含有一轉盤以及一刀繩，轉盤具有扁平狀之本體，本體表面設置有用以連接驅動裝置之連接部，本體於連接部一側表面凹設有凹槽，凹槽內穿設有刀繩，並使刀繩貫穿出本體之側表面，且本體於刀繩相對之側表面固定有配重元件，俾使割草盤於使用時所產生之阻力降低，進而可縮小電池體積以及延長電池之使用時間。
