PROBLEM TO BE SOLVED: To provide a preputium storing tool which can be worn on a penis for a long time, and in which the surplus preputium can be stably stored.SOLUTION: A preputium storing tool 10 is put on a penis and gathers the surplus preputium. The preputium storing tool 10 includes: a cloth cylinder 11 which is an elastic cylinder made of cloth and is put on a penis in the state of firmly sticking to the penis when put on the penis a first ring-shaped string 16 which is provided on the side peripheral surface of the cloth cylinder 11 so as to go around in the circumferential direction and a second ring-shaped string 17 which is provided in a position on the root side of the first ring-shaped string 16 of the side peripheral surface of the cloth cylinder 11 with a predetermined space therebetween so as to go around along the circumferential direction. The surplus preputium is gathered and stored in the space between the first ring-shaped string 16 and the second ring-shaped string 17 while tightening the penis with the first ring-shaped string 16 and the second ring-shaped string 17 when the preputium storing tool is put on the penis.