Oxygenation joint structure improvement in a kind of water,It includes have: a joint body mixes air-casing with one,It wherein is formed with socket part in front of joint body,And it is extended with an at least nozzle,Inside is formed with a chamber,Top surface is equipped with one and keeps the water service pipe communicated with the chamber,It is respectively extended with an air inlet pipe in nozzle again,Air inlet pipe one end is being passed through out with an air inlet from nozzle side,The other end is then suitably separated by with nozzle inner walls holding,Gaseous mixture set has a Hou running-on,Hou running-on is formed with a gas chamber inside mixing air-casing forward,Top surface is equipped with one and keeps the connecting tube communicated with the gas chamber,An at least borer for opposite what nozzle quantity is then equipped in mixing air-casing front end.一種水中增氧接頭結構改良，其包含有：一接頭本體與一混合氣套，其中接頭本體前方形成有套接部，並伸出有至少一噴嘴，內部形成有一腔室，頂面設有一與該腔室保持相通之通水管，又噴嘴內各伸出有一進氣管，進氣管一端乃以一進氣孔從噴嘴周側貫出，另一端則與噴嘴內壁保持適當相隔，混合氣套具有一後套口，後套口往前在混合氣套內部形成有一氣室，頂面設有一與該氣室保持相通之連接管，在混合氣套前端則設有相對於噴嘴數量之至少一穿孔者。
