The invention relates to an improved blade structure of a lawn mower.The utility model relates to a structure improvement design of a cutting tool which can simultaneously cut a blade and cut a rope belt synchronously.The inserting hole seat is preset above the blade plate surface of the fixed plate assembly of the general mower.The utility model can insert a group of thin rope cutting knife ropes.The rope body is protruded to the outside of the end of the blade.Forming the expansion of mowing ring diameter,It is extended to the outside of the blade through the rope piece.Because the extension length is shortened,The rigidity is increased appropriately.Synchronous mowing operation with the blade in the inner and outer ring.Cutter rope parts can be cut and worn to the shortest length before reassembly.Through simple insertion and disassembly of elastic fastener,It has the practical effect of environmental protection and recycling.The utility model makes the use of the mower cutter more suitable for the purpose of economic and practical use.本創作一種割草機刀片結構改良，係一種可同時兼具刀片切割及繩帶旋轉同步割草使用之刀具結構改良設計，主要於一般割草機固定板組裝的刀片板面上方預設插合孔座，藉以插組細繩狀割草用刀繩件，使其繩體凸伸到刀片末端外側，形成割草環徑的擴張，透過刀繩件外伸於刀片的外側，因伸出長度縮短，剛性適當增加，與刀片呈內外環面同步割草操作，刀繩件可切割磨損到最短長度才換裝，通過彈性扣件的簡便插固拆卸，兼具環保回收的實用功效，使割草機刀具使用更符合經濟實用的目的。
