A ventilation fitting (10) and a patient ventilation interface (100). The ventilation fitting (10) comprises a breath connecting portion (20) and a pipeline connecting portion (30) fixedly connected to the breath connecting portion (20)； the breath connecting portion (20) is connected to a patient interface (70), the breath connecting portion (20) is provided with a ventilation fitting port (21) and a first sampling port (22), and the pipeline connecting portion (30) is provided with an expiratory pipeline port (34), an inspiratory pipeline port (36) and a first sampling connecting port (31), the first sampling connection port (31) being in communication with the first sampling port (22). The breath connecting portion (20) is provided with the ventilation fitting port (21) and the first sampling port (22), the ventilation fitting port (21) is used for ventilating with a patient by means of the patient interface (70), and the first sampling port (22) acquires gas exhaled by the patient and is in communication with a monitoring device by means of the first sampling connecting port (31), so that the breath state of the patient can be monitored.L'invention concerne un raccord de ventilation (10) et une interface de ventilation de patient (100). Le raccord de ventilation (10) selon l'invention comprend une partie raccordement à la respiration (20) et une partie raccordement de conduite (30) reliée fixe à la partie raccordement à la respiration (20) ； cette dernière (20) est reliée à une interface patient (70) et pourvue d'un orifice de raccord de ventilation (21) et d'un premier orifice d'échantillonnage (22), et la partie raccordement de conduite (30) est pourvue d'un orifice de conduite d'expiration (34), d'un orifice de conduite d'inspiration (36) et d'un premier orifice de raccordement d'échantillonnage (31) en communication avec le premier orifice d'échantillonnage (22). La partie raccordement à la respiration (20) est pourvue de l'orifice de raccord de ventilation
