The invention is a device positioned on a tree, which provides a device that can be positioned on an object without damaging the tree. It is mainly composed of a positioning sheet which is arranged to be bound to trees. The positioning sheet is composed of a plurality of folding sheets, and both ends of the positioning sheet are provided with interlocking connecting and fastening holes. The positioning sheet can be used to lock objects (such as traffic reflectors), and each folding sheet is formed with retractable elasticity. Therefore, except that the positioning sheet can be bound to trees, and the diameter can be expanded with the growth of trees, there will be no invasion. Damage to trees caused by entering bark.本創作係一種定位於樹木之裝置，乃提供一種可定位於物件，且不會傷害樹木之裝置。主要係：設成一定位片束合於樹木，該定位片係設成由複數片曲摺片構成，兩端具有可相互扣合之連結扣、扣合孔，該定位片可供鎖合物件(例如：交通反光片)，又，各曲摺片形成具有伸縮彈性，因此，除了可束合定位於樹木，並可隨樹木成長擴大直徑，不會有侵入樹皮造成傷害樹木之問題。
