PROBLEM TO BE SOLVED: To solve the problems that underwear with a pelvis belt has a pelvis belt, and the pelvis belt is required to uniformly apply horizontal tension and have a stretching force not so strong to prevent poor blood flow, but existing underwear with a pelvis belt has a pelvis belt having a strong stretching property and applying non-uniform horizontal tension, the existing underwear with a pelvis belt often has a tight underwear body stretched as a whole like a girdle, and the underwear with a pelvis belt is limited to be used by a woman.SOLUTION: Popularized underpants are used for the underwear, the back body of the underwear is mounted with a pelvis belt having a stretching property not so strong, and the pelvis belt is put around the pelvis and fastened at the front of a users body. The underwear has increased comfortableness to wear as a whole compared with a girdle, the pelvis belt is prevented from being shifted when the user sits down or stands up, the underwear is easy to put on and take off at excretion, and the pelvis belt uniformly applies a horizontal force suitable for pelvis correction to an appropriate position.COPYRIGHT: (C)2012,JPO&INPIT【課題】 骨盤ベルトつき下着における骨盤ベルトは左右均等に張力がかかり、血流が阻害されないよう強い収縮力の無いものが望ましい。既存の骨盤ベルトつき下着の骨盤ベルトはいずれも強い収縮性があり、また左右均等に張力がかからないものも多い。また、骨盤ベルトが設置される下着本体もガードル等全体に収縮性があるものが多く圧迫感がある。また使用対象者が女性に限定されている。【解決手段】 一般に多く普及しているパンツ素材の下着の後ろみごろに伸縮性の強すぎない骨盤ベルトを設置し、骨盤を周回した後に体の前面で組み立てる構造にすることによって、ガードルに対して下着全体の着心地のよさを向上すると共に、骨盤ベルトの立ちすわりの際のずれを防ぎ、排泄の際の着脱を簡便にした上で、骨盤矯正に適切な矯正力を適切な位置に左右均等に加える事を可能にしている。【選択図】図1