The present invention relates to a silicone prosthesis including a silicone shell, which has superior texture and comfort when implanted in the body, minimizes stress concentration that may arise when wearing for a long time by eliminating the difference in physical characteristics and stress in all parts of the shell, due to the silicone prosthesis having a uniform thickness, increases resistance to fatigue fracture so as to maximize the safety and lifespan of the silicone prosthesis, and which controls the flow of the silicone in various angles, thereby providing a round or an anatomical type silicone prosthesis having a shell with enhanced durability and a uniform thickness, and to a method for manufacturing the silicone prosthesis by coating a silicone solution on a mold body having a shape of the silicone prosthesis and drying the coated mold body in a drying device to form the silicone shell, the method including a silicone thickness adjustment step performed such that a jig is disposed in an inner space of the drying device to fix the mold body, the mold body is fixed to the jig, and the jig is maintained in a level state and then moved by rotation and tilting at various angles to uniformly adjust the thickness of the silicone shell using fluidity of silicone.
