The present invention is to provide an artificial shell for farming an oyster which increases a recycling rate without a damage to an artificial shell when crushing an oyster shell and separating the same from the artificial shell, enables the separated oyster shell to be used in compost, is eco-friendly by reducing the use amount of plastic and using the wasted oyster shell as a material, increases the productivity and prevents the sea from being polluted by increasing a mounting rate of oysters, and greatly increases the intensity and elasticity. To this end, the artificial shell for farming an oyster in the present invention comprises: a thin disk member where an oyster is attached and grows, and which uses plastic having a curved side whose central portion is convex as a main material a central penetration member which protrudes from a concave surface and has a cylindrical shape with a circular hole to let a plaited thread penetrate through the center of the disk member a plurality of ribs radially formed toward an edge of the disk member from the central penetration member to be installed in a direction perpendicular to the disk member, and having a triangle shape whose height becomes gradually lower in the direction of the edge of the disk member by being integrated on an external wall side of the central penetration member to cover the protrusion height of the central penetration member whose central portion protrudes and a plurality of rectangular, circular, or diamond-shaped drainage and up-and-down coupling grooves formed to have widths in a radial direction of 1/4 to 2/3 based on a radius of the disk member, and arranged in a radial flower pattern.COPYRIGHT KIPO 2016본 발명은 인조패각으로부터 굴 껍질을 파쇄하여 분리해낼 때 인조 패각의 손상을 없애 재활용율을 높이고 분리시킨 굴 껍질을 퇴비에 활용할 수 있도록 하고, 플라스틱의 사용량을 줄이고 폐기되는 굴 껍데기를 재료로 사용함으로써 친환경적이며, 또 굴의 안착률을 높여 생산성을 향상하고 바다의 오염을 방지할 수 있고, 강도나 탄성이 크게 증대되는 구조의 굴 양식용 인조 패각을 제공하는 데 있다. 이를 위해 본 발명은 굴이 달라붙어 성장하도록 제공되는, 중앙부가 볼록한 만곡면을 가지는 플라스틱을 주재료로 한 얇은 원판부재와 그 원판부
