The present invention relates to a silicone prosthesis comprising a silicone shell which has superior texture and comfort when worn inside 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 uniform thickness increases resistance to fatigue fracture so as to maximize the safety and the lifespan of the silicone prosthesis and which controls the flow of the silicone toward various angles thereby providing a round or an anatomical type silicone prosthesis having the shell with enhanced durability and entirely uniform thickness. The present invention also relates to a method for manufacturing the silicone prosthesis for forming the silicone shell of the silicone prosthesis by coating a mold body having the shape of the prosthesis with a silicone solution and drying same in a drying device wherein a jig is formed inside the drying device for fixing the mold body so as to fix the mold body and maintain a level state until rotating and tilting in various angles to use the fluidity of the silicone for adjusting the thickness of the shell to be uniform thereby providing a method for manufacturing the round or anatomical type silicone prosthesis having the shell with enhanced durability comprising a step for adjusting the thickness of the silicone.