< Topic >In order from to be able to assure the stability reform of the sacro-iliac joint considered as the structure of the Pelvis, especially, considering also the structure of the pressure component to the upper & lower hind-gut bone section and the direction which adds that pressure, it offers the belt for the waist which is formed more appropriately.SolutionsAs in the region which this touches to upper of the intestinal bone & lower hind-gut bone section 50 on back side of belt itself 2, it possesses concave form, has projection body 7,8 on the bottom inside the particular concave surface, it pushes in upper & lower hind-gut bone section 50 to the inside lower part due to particular projection body 7,8 and it provides the cup condition intestinal bone applying tool 5,6 which is pressed, the assistance where it is formed by X letter condition to grain side of belt itself 2 of the region where it can provide this cup condition intestinal bone applying tool 5,6, it presses with the intersection of X letter condition vis-a-vis cup condition intestinal bone applying tool 5,6 and conveys pushing pressureBelt 9.10 is provided.< Selective figure >Figure 1【課題】骨盤の構造からみてより仙腸関節の安定・矯正を図り得るように、特に、上・下後腸骨棘部への圧迫部材の構造とその圧迫を加える方向をも考慮して、より適切に構成された腰用ベルトを提供する。【解決手段】ベルト本体2の裏面側で腸骨の上・下後腸骨棘部50に当接する部位に、凹面形状を有し、当該凹面内底に突起体7,8を備え、当該突起体7,8により上・下後腸骨棘部50を内下方へ押し込み圧迫するカップ状腸骨当て具5,6を設けるとともに、このカップ状腸骨当て具5,6が設けられた部位のベルト本体2の表側に、X字状に形成され、カップ状腸骨当て具5,6に対してX字状の交点で圧迫し押圧力を伝える補助ベルト9.10を設ける。【選択図】図1