The invention relates to a air release valve of an air cushion bed, which comprises a seat body, a connected pipe group combined with the seat body, a switch unit arranged between the seat body and the connected pipe group, which can open and close the connected pipe group, and an elastic element arranged between the seat body and the switch unit.Thus, the seat body and the air cushion bed can be used in combination, and the connecting pipe group is arranged inside the air cushion bed. When the air is inflated, the connecting pipe group is closed by the switch unit, and when the air is deflated, the connecting pipe group is opened by the switch unit, so that the air in the air cushion bed can be discharged rapidly and completely from the connecting pipe group and the switch unit, so as to facilitate the doctor to carry out the follow-up care actions for the patients, and then make the Creation is easy to use, and achieves the effect of effective and rapid discouragement.本創作係一種氣墊床之洩氣閥,其包含有一座體;一與座體結合之連通管組;一設於座體與連通管組間之開關單元,可對連通管組進行開啟與封閉之動作;以及一設於座體與開關單元間之彈性元件。藉此,可利用座體與氣墊床結合使用,且將連通管組設於氣墊床之內部,當充氣時係以開關單元封閉連通管組,而當洩氣時係以開關單元開啟連通管組,使氣墊床內部之氣體自連通管組與開關單元處迅速且完全排出,以利醫者對患者執行後續之照護動作,進而使本創作易於使用,並達到有效且快速洩氣之功效。