The weeding disk of the grass trimmer of this creation includes a disc body, one first except straw rope and a second herbicidal rope. Disc body has a top surface, a bottom surface, an interconnecting piece, two first perforation and two second perforation. Interconnecting piece system position has a connecting hole and two opposite sides side on disc body. The center of disc body is run through in connecting hole system. Two first perforation and two second perforation system difference positions are on the two opposite sides side of interconnecting piece. The top surface and bottom surface of disc body are run through in every one first perforation system. The top surface and bottom surface of disc body are run through in every one second perforation system. First passes through two first perforation of disc body except straw rope system. Second herbicidal rope system passes through two second perforation of disc body.本創作的割草機的除草盤包括一圓盤本體、一第一除草繩及一第二除草繩。圓盤本體具有一頂面、一底面、一連接部、兩第一穿孔及兩第二穿孔。連接部係位在圓盤本體上,且具有一連接孔及兩相對側邊。連接孔係貫穿圓盤本體的中心。兩第一穿孔及兩第二穿孔係分別位在連接部的兩相對側邊。每一第一穿孔係貫穿圓盤本體的頂面及底面。每一第二穿孔係貫穿圓盤本體的頂面及底面。第一除草繩係穿過圓盤本體的兩第一穿孔。第二除草繩係穿過圓盤本體的兩第二穿孔。