PROBLEM TO BE SOLVED: To provide a device for preventing insect pests from creeping-up on a tree.SOLUTION: A device 1 attached with a water moat 2 is set near the bottom of a tree 5, an approach path is blocked and insect pests are prevented from creeping-up on the tree 5.COPYRIGHT: (C)2015,JPO&INPIT【課題】害虫の樹木へのはい昇りを防止する装置を提供する。【解決手段】樹木5の根元近傍に、水堀2を設けた装置1を設置することにより、進入路を遮断して、害虫の樹木5へのはい昇りを阻止する。【選択図】図3