PROBLEM TO BE SOLVED: To provide a weeding work machine capable of reliably preventing an electric shock of an operator due to an electric leakage and ensuring the safety of the operator. A weeding work machine is capable of discharging toward a ground work machine that is mounted on a traveling vehicle and works on the ground, and a plant that is mounted on the ground work machine and that is a vegetation target that is to be removed. A discharge device； a ground detection means for detecting whether the discharge device is in a grounded state or a non-grounded state； and a discharge device of the discharge device when the grounded detection means detects a non-grounded state of the discharge device. And a control device for stopping the discharge. [Selection diagram] Figure 8【課題】漏電等に起因する作業者の感電を確実に防止して作業者の安全性を確保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、走行車両に装着され且つ地面に対して作業を行う対地作業機と、前記対地作業機に装着され且つ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、前記放電装置が接地状態と非接地状態のいずれの状態にあるかを検知する接地検知手段と、前記接地検知手段が前記放電装置の非接地状態を検知したときに前記放電装置の放電を停止する制御装置と、を備えている。【選択図】図８
