PURPOSE:To certainly prevent no only infection of AIDS from sexual organs but also the infection thereof from a public hair part, by forming a rubber sheet, for example, having an almost inverted triangular shape in order to cover the abdominal region having public hair and mounting the same to the abdominal region in a freely detachable manner. CONSTITUTION:A cover body 1 being a perfect preventing medical device for covering the abdominal region having public hair in the periphery of the sexual organs of a human body is formed into a sheet having an almost inverted triangular shape, for example, using rubber as a material and the first fixing members 3 are provided to both ends of the upper side part 2 of the inverted triangular shape and a fastening band 5, which has the second fixing member 4 fixable to the first fixing member 3 in a freely detachable manner provided to the end part thereof, is provided to the lower end of the inverted triangular shape. When a man wears this device, the penis is inserted in inserted in a sac body 7 from a guide port 6 and, when a women wears said devices, the sac body 7 is contrarily inserted in the vagina. By this method, the mutual body fluids discharged at the time of sexual intercourse are not respectively adhered to sexual organs and a public hair region and the infection of AIDS can be prevented and this device can be worn and taken off easily and rapidly.
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