PURPOSE: A tree supporter capable of simplifying the structure thereof is provided to connect and fix supporting stands without using fixing brackets, and to enable users to easily install the supporter.CONSTITUTION: A tree supporter comprises the following: supporting stands(10) radially arranged on the outside of a tree for supporting the trunk of the tree a binding ring connecting the supporting stands for forming a prismoidal shaped supporting structure fixing holes(13) penetrating the upper sides of the supporting stands and a cap(30) covering the upper side of the supporting stands, formed with a flexible material. The binding ring includes plural connection members(21) with bolt bodies(21a) having a nut hole. The connection members penetrate the fixing holes of the supporting stands before being inserted into the nut hole(21b) on the neighboring connection member, and fastened with a fastening nut(21c).COPYRIGHT KIPO 2012본 발명은 수목용 지지구에 관한 것으로, 더욱 상세하게는 가로수 등 각종의 수목의 줄기부분을 방사구조로 지지하여, 뿌리가 안정되게 활착되지 못한 수목이 강풍이나 기타 흔들림에 의해 넘어지거나 기울어지는 것을 예방하는 수목용 지지구에 관한 것이다.