An apparatus for drip-feeding liquid to a tree, comprises a bag having a installation hole and a pressuring device, and a piping having a first pipe, a second pipe and a branch pipe, wherein one of the ends of the first pipe is in connection with the bag, the second pipe is disposed throughout the installation hole, the branch pipe has three-ends opening, named as input opening, out opening and installation opening. Another end of the first pipe is corresponding to the input opening. One of the ends of the second pipe is corresponding to the output opening. Another end of the second pipe is in connection with outside.一種樹用點滴裝置,其包括一袋體,該袋體設有一安裝孔及一壓力裝置;以及一管體,包括一第一管體、一第二管體及一歧管,該第一管體的一端連通至該袋體,該第二管體穿設該安裝孔,該歧管具有三端開口,定義該三端開口分別為一流入端、一流出端及一設置端;其中,該第一管體的另一端對應於該流入端,該第二管體的一端對應於該流出端,該第二管體的另一端連通至外界環境。1‧‧‧樹用點滴裝置10‧‧‧袋體11‧‧‧封合部111‧‧‧安裝孔112‧‧‧吊掛帶12‧‧‧容置部121‧‧‧注入口122‧‧‧輸出口20‧‧‧管體21‧‧‧第一管體211‧‧‧彎折段212‧‧‧控制開關22‧‧‧第二管體221‧‧‧控制開關23‧‧‧歧管231‧‧‧流入端232‧‧‧流出端233‧‧‧設置端24‧‧‧連接部
