A cross-type grass-mowing wire comprises a wire body and a plurality of teeth formed on two opposite sides of the wire body. Each tooth is defined with a tooth peak, a tooth valley, and a plurality of transverse sections formed between the tooth peak and the tooth valley at different heights. The wire body substantially formed with a cross-shaped transverse section is defined with a first span and a second span, in which a span ratio of the first span to the second span is between 0.5:1 and 1.3:1.一種十字型割草線,包括一線身、以及形成於該線身之相對二側之複數齒;各該齒定義一齒峰、一齒谷、以及由齒峰至齒谷形成不同高度的複數個橫斷面;該線身具有概呈十字之一橫截面,該橫截面定義有一第一跨距與一第二跨距;該第一跨距與該第二跨距之跨距比在0.5:1~1.3:1之間。10‧‧‧線身12‧‧‧主體14‧‧‧第一突稜16‧‧‧第二突稜30‧‧‧齒31‧‧‧齒峰32‧‧‧齒谷
