This invention relates to a planting device with automatic water supply, which at least comprises a pot, a pipeline portion, and a fastener. In which, the pot is provided with a planting space for plant cultivation. The pipeline portion is a hollow pipe body and connected to one side at the bottom of the pot. At least one through hole is provided between the pipeline portion and the planning space of the pot. The fastener is connected to the upper side of the pot. During application, the supplied water flows into the planting space along the through hole of the pipeline portion, so the water flowing into the planting space may be supplied to and absorbed by the plant cultivated in the planting space. Since the supplied water enters from the pipeline portion connected at the bottom of the pot, so this invention can ensure that the water will not splash on the surrounding environment due to improper supply and thus further ensure the cleanness and neatness of the environment.本發明乃係一種自動給水植栽裝置,至少具有盆器、管道部及扣件,其中盆器具一栽種植物之植栽空間,管道部為一中空狀管體而連結於盆器底處一側,管道部與盆器之植栽空間間具至少一通孔,扣件乃相連結於盆器之上方處,應用時所供應的水將沿管道部通孔流入於植栽空間之中,該流入於植栽空間中的水便可供給栽種於植栽空間中的植物所吸收,由於該所供應的水皆自盆器底處連結之管道部進入之,如此可確保水不會因供應不當而濺濕周遭環境,進一步確保環境之乾淨整潔。