The present invention relates to a respiratory nasal canal device comprising a nasal cannula body having a cavity inside and a second nasal connector extending outside the communication cavity, the nasal canal body and each nasal connector a junction ring portion is formed at the intersection, and at least one of the nasal tube body and each nasal connector has a concave ring segment recessed on one side of each of the junction ring portions, the thickness of the concave ring segment being smaller than the thickness of the nasal tube body, each The thickness of a nose tube and the thickness of each junction ring. Thereby, when the nasal connecting tube is pressed, the pressure will concentrate on the concave ring segment, so that the other portions of the nasal connecting tube are not easily deformed, so that the breathing nasal tube device has the advantages of smooth air supply.本創作係關於一種呼吸鼻管裝置，此呼吸鼻管裝置包括一鼻管本體，鼻管本體內部具有一容腔及外部延伸有連通容腔的二鼻接管，鼻管本體與每一鼻接管的交接處形成有一交接環部，鼻管本體及每一鼻接管中至少一者在每一交接環部的一側凹設有一凹陷環段，凹陷環段的厚度小於鼻管本體的厚度、每一鼻接管的厚度及每一交接環部的厚度。藉此，鼻接管受壓時，壓力會集中於凹陷環段，使鼻接管其他處不易變形，以達到呼吸鼻管裝置具有供氣順暢之優點。
