The utility model relates to a mower structure,The utility model is a narrow and long grass cutting bladeFour sides and two sides,The four sides are respectively provided with straight inclined or arc inclined edge parts which gradually shrink from the outer group connection hole or arc angle gradually shrink from the outer group connection hole,And make the direction of two adjacent edges opposite,It forms a forward straight inclined or arc inclined edge, and the adjacent one is a reverse straight inclined or arc inclined edge,Two arc convex cutting edges are arranged on the two sides,A cutting edge is formed in the center of the blade,The two sides of the convex edge of the two arcs extend to the R corner of the two arc edges to strengthen the pulling in and cutting the weeds；On this basis,A concave edge with several acute angles is arranged on the straight or arc inclined edge,As the first weed cut in,Then the two sides of the arc convex edge extend to the R corner of the two arc edges to strengthen the cutting,To achieve the purpose of effectively and completely cutting weeds and prevent weeds entanglement.一種割草刀結構，為狹長割草刀片其組接孔旁設兩旁側、四邊側及兩端邊，主要於四邊側分別設有直斜由外向組接孔漸縮或弧斜由外向組接孔漸縮的直斜或弧斜刃部，並使相鄰兩刃部的方向相反，形成正向直斜或弧斜刃部相鄰者為反向直斜或弧斜刃部，其兩旁側設兩弧凸刃部，使其刀片中央形成亦有切割作用的刃部，並於兩弧凸刃部的兩側延伸至兩弧邊R角處得以加強攬入割除雜草；據此，利用直斜或弧斜刃部設有數銳角的凹刃口，作為第一道雜草攬入割斷，再利用弧凸刃部的兩側延伸至兩弧邊R角處得以加強割除，達到有效完全割除雜草並防止雜草纏繞目的。
