A bubble continuous positive airway pressure device has a container (10), an inner conduit (21) for conducting an airflow, an outer conduit (22), a rack (31), a gear (32), and a knob (331). The inner conduit (21) has an aperture (2121). The outer conduit (22) is longitudinally slidable relative to the inner conduit (21), and has at least one through hole (221) connected with the aperture (2121). The knob (331) drives the gear (32) to rotate and the gear (32) drives the rack (31), so as to drive the outer conduit (22) to slide downward or upward in the container (10). The bubble continuous positive airway pressure device prevents dust and bacteria in the ambient environment from polluting the liquid in the container (10) when adjusting gas pressure, so as to ensure the patients' health.本發明的氣泡持續性正壓通氣裝置包含液體容器、內導管、外導管、齒條、齒輪及旋鈕；液體容器包含有一內空間；內導管設於內空間中且具有開口；外導管套設於內導管上、可相對內導管滑移且包含至少一與開口相連通的通孔；齒條縱向設置於外導管上；齒輪設置於內空間中且與齒條相嚙合；旋鈕可帶動該齒輪旋轉，該齒輪可驅動該齒條，從而使外導管將於內空間中向下或向上滑移。所述的氣泡持續性正壓通氣裝置可避免液體容器內的液體於調整管路中的氣流壓力之過程中受到汙染，進而確保患者的身體健康。
