PROBLEM TO BE SOLVED: To provide a waist supporter capable of easing or preventing a low back pain by efficiently increasing abdominal pressure without excessively binding a body.SOLUTION: A waist supporter comprises: a belt body 12 that is wholly formed like a belt, is wound around an abdominal region of a wearer and of which both ends 14 and 15 are attachable to and detachable from each other； and a pair of elastic belts 30 and 30 that are made of elastic members to be stretched toward wearer's sides in a wearing state, with setting positions of the belt body 12 corresponding to the abdominal region as base ends 33 and 33, and of which each tip end 30a is attachable to and detachable from the belt body 12. The respective base ends 33 are arranged at a lower abdominal region in the wearing state, and the pair of elastic belts 30 and 30 are positioned on the wearer's sides and are stretched obliquely upward from the base ends 33 in the wearing state.【課題】身体を締付け過ぎることなく、効率よく腹圧を高めて、腰痛を緩和ないし予防できる腰用サポータを提供すること。【解決手段】全体が帯状であって、装着者の腹部周りに巻き付けられ、その両端部１４，１５どうしが着脱自在であるベルト体１２と、装着状態において、ベルト体１２の腹部に対応した位置を基端部３３，３３として両脇側に向けて引き延ばされる弾性部材であり、その先端部３０ａがベルト体１２に着脱自在である一対の弾性ベルト３０，３０と、を備え、基端部３３は、装着状態において、丹田に配置されるようになっており、一対の弾性ベルト３０，３０は、装着状態において、基端部３３から両脇側であって、かつ、斜め上方に、それぞれ引き延ばされるようになっている。【選択図】図３
