An aeration device includes a fluid body, a guiding pipe and a water inlet pipe. The fluid body is an integrally-made structure, and has an outlet end. The guiding pipe includes an end cover and a connecting portion. The guiding pipe passes through the fluid body. The end cover is connected to the guiding pipe. The guiding pipe, the guiding pipe and the connecting portion are integrally made, and connected to a rear end of the fluid body. The water inlet pipe is connected to an outer wall of the fluid body and is communicated to the fluid body. The water inlet pipe is for inletting the water, and the guiding pipe is for inletting the air, then the water and the air can be mixed in the fluid body and led out from the outlet end.一種供氧裝置，包含導流本體、引流管與進水管。導流本體係為一體成型結構，具有出水端。引流管包含端蓋與連接部。引流管穿設於導流本體中。端蓋連接引流管。引流管、端蓋及連接部一體成型，並連接於導流本體之後端。進水管連接於導流本體之外層並與導流本體連通。其中，進水管用以導入水流，且引流管用以導入空氣，而進水管導入之水流與引流管導入之空氣交匯於導流本體中並被導出於出水端。
