A connection device between a ventilator (1) and an oxygen connection pipe (78) in a non-invasive ventilator, comprising a ventilator (1), the upper surface of the ventilator (1) being fixedly connected to a support leg (2) and an oxygen storage box (3), an oxygen inlet device and an oxygen outlet device being provided inside the oxygen storage box (3), the oxygen inlet device comprising an oxygen inlet pipe (4), and the oxygen outlet device comprising an oxygen outlet pipe (5). When using the connection device between the ventilator (1) and the oxygen connection pipe (78) in the non-invasive ventilator, a healthcare worker rotates a buckle (81) to move an adjustment rod (80) outward, and moves a clamping block (75) outward under the pressure of a compression spring (74), and at this time, the healthcare worker can sleeve the oxygen connection pipe (78) on a fixing block (7), and rotate the buckle (81) to drive the adjustment rod (80) to press the clamping block (75) inward, so that the surface of the clamping block (75) presses and fixes the oxygen connection pipe (78), and the inner wall of the oxygen connection pipe (78) presses a second sealing ring (77), thereby achieving the effects of being easy to install, having strong sealing performance and avoiding oxygen leakage.L'invention concerne un dispositif de raccordement entre un appareil de ventilation (1) et un tuyau de raccordement d'oxygène (78) dans un appareil de ventilation non invasif, comprenant un appareil de ventilation (1), la surface supérieure de l'appareil de ventilation (1) étant raccordée de manière fixe à une patte de support (2) et à une boîte de stockage d'oxygène (3), un dispositif d'entrée d'oxygène et un dispositif de sortie d'oxygène étant disposés à l'intérieur de la boîte de stockage d'oxygène (3), le dispositif d'entrée d'oxygène comprenant un tuyau d'entrée d'oxygène (4) et le dispositif de sortie d'oxygène comprenant un tuyau de sortie d'oxygène (5). Lors de l'utilisation du disposit
