The pneumatic unit of this creation pneumatic bed of what, it includes one first plate body, one second plate body, a frame plate body and a third plate bodys, aforementioned each plate body is sequentially to be combined with each other, an elongated Durchgangshohle is formed on the frame plate body, it is equipped with perforation on each plate body and is interconnected with the elongated Durchgangshohle, is wherein to have selectively formed the perforation on the third plate body. Second plate body, the elongated Durchgangshohle and the third plate body form an accommodating space, a pneumatic unit group can be made of several pneumatic units, again from several pneumatic unit groups in combination with is formed a pneumatic bed and can directly with the use of original mattress, have the advantages that be not take up space.本創作用於氣動床之氣動單元，其包含一第一板體、一第二板體、一框架板體與一第三板體，前述各板體為依序相互結合，該框架板體上形成有一長型穿洞，各板體上均設有貫孔並與該長型穿洞相互連通，其中該第三板體上為選擇地形成有該貫孔。該第二板體、該長型穿洞以及該第三板體形成一容置空間，可由數個氣動單元組成一氣動單元組，再由數個氣動單元組可結合形成一氣動床並可直接配合原有床墊使用，具有不佔用空間的優點。
