The present invention is a water planting device comprising a first seat body and a second seat body, the first seat body having a latching portion, and the second seat body having a fastening portion by the engaging portion The first seat body can be fastened to the second seat body without being easily separated, and the user can quickly install the water grass between the first seat body and the second seat body. Further, the time for installing the water plants in the water planting device is greatly reduced, and the circumferences of the first body and the second body are smooth, so that the user can safely install the water plants.本新型為一種水草培植裝置，包含有一第一座體及一第二座體，該第一座體具有一卡合部，而該第二座體具有一扣接部，藉由該卡合部扣於該扣接部，使該第一座體能夠與該第二座體穩固扣合而不易分離，使用者能夠快速將水草裝設於該第一座體及該第二座體之間，進而使裝設水草於水草培植裝置的時間大幅下降，且第一座體及第二座體的周緣平滑，更令使用者能夠安全的裝設水草。
