PROBLEM TO BE SOLVED: To provide a weeding work machine capable of weeding while ensuring the safety of an operator and maintaining the effect of weeding for a long period of time. SOLUTION: The weeding work machine is provided with a traveling vehicle, a ground working machine provided behind the traveling vehicle and working on the ground, and a rear side of the traveling vehicle and a front side of the ground working machine. A discharge device that is provided and is capable of discharging toward the soil on the ground that is the work target of the ground work machine or the plants that are vegetated on the ground and that is the removal target. The discharge device includes an insulative outer shell and a discharge unit that is covered by the outer shell and discharges toward the ground. [Selection diagram] Figure 1【課題】作業者の安全性を確保しながら除草を行うことができると共に除草の効果を長期間にわたって維持することができる除草作業機を提供すること。【解決手段】除草作業機は、走行車両と、前記走行車両の後方に設けられ且つ地面に対して作業を行う対地作業機と、前記走行車両の後方であって且つ前記対地作業機の前方に設けられ、前記対地作業機の作業対象となる地面の土壌又は前記地面に植生した除去対象となる植物に向けて放電可能な放電装置と、を備えている。前記放電装置は、絶縁性の外殻体と、前記外殻体により覆われ且つ前記地面に向けて放電を行う放電部と、を有している。【選択図】図１
