PROBLEM TO BE SOLVED: To provide a liquid jetting device that is easy to use and prevents clogging from occurring due to sucked materials.SOLUTION: A liquid jetting device has a nozzle 5 for jetting liquid 14, a suction port 6a for sucking the jetted liquid 14, and first piping 15 and second piping 16 for fluidizing the liquid 14 sucked from the suction port 6a. As compared with the first piping 15 near the suction port 6a, the second piping 16 away from the suction port 6a has larger inner and outer diameters.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】使い易く吸引した物が詰まり難い液体噴射装置を提供する。【解決手段】液体14を噴射するノズル5と、噴射した液体14を吸引する吸引口6aと、吸引口6aから吸引した液体14を流動させる第1配管15及び第2配管16と、を備え、吸引口6aに近い第1配管15に比べて、吸引口6aから離れた第2配管16の内径及び外径を大きくする。【選択図】図1