Provided is an irrigation nozzle structure which can be widely used irrespective of the difference in size and shape between nasal cavities and which enables the adjustment of the angle, amount, and supply target of irrigation fluid. An irrigation nozzle for a nasal irrigation device is provided with: a cylindrical pipe through which nasal irrigation fluid flows, the nasal irrigation fluid being supplied from a film container having the nasal irrigation fluid held therein, and which is bent to the radius of curvature of 90 to 160 degrees and a nozzle tip which has a nasal cavity insertion section interconnected with the pipe, the nasal cavity insertion section having a rear end interconnected with the cylindrical pipe, the rear end having a greater diameter than a nasal cavity opening and being formed so as to be reduced in diameter toward the tip, the tip section of the nozzle tip having a circular shape having a diameter of 5 mm to 10 mm, the tip section having a double structure, the tip section having on the inside thereof a water stop plug having a diameter of 5 mm to 10 mm and having an inlet/outlet opening for the nasal irrigation fluid, the nozzle tip having at least one or more discharge openings and being fitted to the outside of the water stop plug so as to cover the water stop plug. A flexible closing material may be provided to the tip section of the nozzle.Linvention concerne une structure de buse dirrigation qui peut être largement utilisée indépendamment de la différence de dimension et de forme entre des cavités nasales, et qui permet lajustement de langle, de la quantité et de la cible dalimentation dun fluide dirrigation. Une buse dirrigation pour un dispositif dirrigation nasale comprend : un tuyau cylindrique à travers lequel sécoule un fluide dirrigation nasale, le fluide dirrigation nasale étant fourni à partir dun récipient de film ayant le fluide dirrigation nasale contenu à lintérieur de celui-ci, et qui est plié au rayon de courbure de 90
