The present invention relates to a device (100) used to manage natural burial and flat burial, including a tree type, a flower type, a grass type, and a burial forest type, the device (100) being characterized by comprising: a plurality of outer structures (110) installed such that a plurality of cremation urns are seated underground； and a plurality of inner structures (120) having bottom portions (122) that have drain holes (121) formed therein, respectively, the inner structures (120) being installed provisionally while being filled with a filler such that a plurality of cremation urns filled with cremation ash are seated inside the plurality of outer structures (110) later, respectively. According to the present invention, a plurality of outer structures are installed horizontally, a plurality of cremation urns are seated on the outer structures, respectively, and, by effectively seating many cremation urns in a limited space in this manner, it is possible to lead funeral culture related to natural burial and flat burial, including a tree type, a flower type, a grass type, and a burial forest type. In addition, the outer structures or the inner structures have a simple structure, thereby providing excellent workability.La présente invention concerne un dispositif (100) utilisé pour gérer l'inhumation naturelle et l'inhumation plate, y compris un type d'arbre, un type de fleur, un type d'herbe et un type de forêt funéraire, le dispositif (100) étant caractérisé en ce qu'il comprend : une pluralité de structures externes (110) installées de telle sorte qu'une pluralité d'urnes de crémation soient assises dans le sol ； et une pluralité de structures internes (120) ayant des parties inférieures (122) qui ont des trous de drainage (121) formés dans celles-ci, respectivement, les structures internes (120) étant installées provisoirement tout en étant remplies d'une charge de telle sorte qu'une pluralité d'urnes de crémation remplies de cendres de crémation sont logées
