Abstract: An improved condom includes a small sack for collecting semen, a condom sack not compressing but surrounding the glans in wearing, a supporting portion extending from the rear of the condom sack, and a string, band or tear strips for removing the condom. The supporting portion is shorter than a half of the erect penis in length, slightly thicker than the condom sack in thickness, compressing the penis only enough to prevent the condom from slipping out, so that, in use, wearer feels comfortableness and cleanliness not by disturbing the blood circulation in the spongeness structure of the glans, and also, it is easy to put on and take off the condom, and provide a more contact of skin during sexual intercourse with comfortableness and satisfaction. Further, it is easy to reuse the once used condom just by washing or disinfection and then fold it once. Therefore the present invention is environmentally friendly in view of saving resources and preservation of environment.