The pressure detecting structure of the air bed is mainly composed of a plurality of detecting units, a control unit and an air pump disposed between the plurality of air cushion cylinders, wherein the control unit measures according to the detecting units The resulting pressure value controls the operation of the air pump so that the air cushion cylinders can stably support various parts of the user.本新型提供一種氣墊床之壓力偵測結構主要由設置於複數個氣墊筒之間的複數個偵測單元、一控制單元以及一氣泵所組成,其中,該控制單元根據該些偵測單元所測得之壓力值控制該氣泵之運作,使得該些氣墊筒能穩固地支撐使用者各個部位。