The present invention relates to a height-adjustable pillow having a height that is adjustable according to the weight of a user so as to be usable, while having excellent air permeability, and comprises: a cervical pillow comprising an outer shell and contents filled inside the outer shell so as to provide elasticity, wherein the outer shell and the contents have a loading part, which is recessed such that the cervical spine and the occipital bone are loaded thereon, and wall parts formed to protrude from both sides of the loading part； side pillows including side-of-face contact parts, which are attached to both sides of the cervical pillow and have a plurality of elastic pads formed in the same shape and stacked therein, and fine height-adjusting parts comprising a plurality of slim pads stacked at the lower portions of the side-of-face contact parts and cover bodies which are finished by respectively encompassing the outer surfaces of the plurality of slim pads and being thermally fused to the edge portions thereof and which have friction increasing parts provided on the outer surfaces thereof； wing parts for connecting the lower portions of the cervical pillow and the side pillows； and an outer cover in which all constituent parts are accommodated and fitted.La présente invention concerne un oreiller à hauteur réglable ayant une hauteur qui est réglable en fonction du poids d'un utilisateur de façon à être utilisable, tout en possédant une excellente perméabilité à l'air et qui comprend : un oreiller cervical comprenant une enveloppe externe et un contenu remplissant l'intérieur de l'enveloppe externe de façon à fournir une élasticité, l'enveloppe externe et le contenu comprenant une partie de chargement, qui est en retrait de telle sorte que la colonne cervicale et l'os occipital soient chargés sur celle-ci et des parties paroi formées pour faire saillie depuis les deux côtés de la partie de chargement ； des oreillers latéraux comprenant des parties de contact
