A kind of glass cutting wires, system is made with plastic material integrated molding, with a head, from the head along axial extended line body portion, the section structure in the line body portion is square, 90 degree of interval sequentially forms the first crest line, the second crest line, third crest line and the 4th crest line, and characteristic is in what: being equipped with the first cutting part in continuous zigzag on first crest line, can propose the dynamics that Noboru is mowed by width greatly by zigzag cutting part.一種割草線,係以塑膠材料一體成型製成,具有一頭部,自該頭部沿軸向延設一線身部,該線身部之斷面結構呈方形,間隔90度依序形成第一稜線、第二稜線、第三稜線與第四稜線,其特徵在於:該第一稜線上設有呈連續鋸齒狀之第一切割部,藉由鋸齒狀切割部可大幅提昇割草的力度。