A reduced pressure device includes a housing, an air pressure storage module and a compression module. The air pressure storage module is installed in the housing and the compression module is mounted on the air pressure storage module. The compression module further includes a pressing bar and a turntable. The pressing bar can be accommodated on the housing, and the pressing bar can be rotated by the turntable relative to the air pressure storage module and the housing while using. When the pressing bar is rotated to a predetermined angle, the pressing bar can compress the air pressure storage module to produce a negative pressure for a negative pressure dressing connecting pipe.一種減壓裝置，包含有一外殼、一氣壓儲存模組以及一壓桿模組。其中，氣壓儲存模組安裝於外殼之中，而壓桿模組安裝於氣壓儲存模組之上。壓桿模組更包含一壓桿本體，以及一轉盤，壓桿本體可收納於外殼，且使用時可利用轉盤相對於氣壓儲存模組與外殼進行轉動，當轉動到一預定的角度時，壓桿本體可壓縮氣壓儲存模組，以產生一負壓，用來提供給一敷料接管組使用。
