The invention relates to an exhaust, splash proof, decompression and drainage bag,The utility model comprises a drainage bag bodyAir nozzle;One end of the drainage bag body is provided with an interface,Connect the drainage pipe with the interface,The other end of the relative interface of the drainage bag body is provided with a discharge outlet,The discharge outlet is connected with the discharge pipe,A release switch is arranged on the discharge pipe,A rotating cover is arranged under the release switch adjacent to the end of the discharge pipe,The screw cap is screwed with the bottle mouth of the storage bottle body;The air nozzle is arranged at one end of the interface adjacent to the drainage bag body,The air nozzle includes a valve opening,The valve opening cover is provided with a plug cover;Accordingly,Opening the plug cover can discharge the gas inside the drainage bag through the valve opening,Avoid the expansion of the drainage bag due to full of air,Reduce the effect of drainage and the risk of infection;By pressing the release switch, the body fluid in the drainage bag can be discharged from the outletThe discharge pipe enters the bottle,It is convenient to observe the volume of drained body fluid from the bottleColornature.本創作係有關於一種排氣防濺減壓引流袋,係包含引流袋本體、氣嘴;引流袋本體一端具有接口,接口連接引流管,引流袋本體相對接口的另一端具有洩出口,洩出口連接排泄管,排泄管上設釋放開關,鄰近排泄管末端且位處釋放開關下方套設可活動旋轉的旋蓋,旋蓋與儲存瓶體之瓶口旋合;氣嘴設在鄰近引流袋本體之接口的一端,氣嘴包括有閥開口,閥開口蓋設有塞蓋;據此,開啟塞蓋能將引流袋本體內的氣體由閥開口排出,避免引流袋本體內因充滿空氣而膨脹,降低引流的效果與感染的風險;且透過按壓釋放開關便能將引流袋本體內之體液由洩出口、排泄管進入瓶體內,方便由瓶體觀察引流體液的量、顏色、性質。