Provided is a sacroiliac belt having a high holding ability for a users pelvis as well as a high tightening effect to the users sacroiliac joints. The sacroiliac belt has a belt pair that forms a pelvic holding loop to hold a user s pelvis. The belt pair has a ilium belt that is wound around the users waist, and a second belt selected from either a buttock belt that is wound around the users waist passing under the users buttocks, lifting up the buttocks, or a lumbar belt that is wound around the users waist, passing a back side of the users lumbar curve located immediately above the pelvis. Both ends of the second belt are each connected to the ilium belt inside both ends of the ilium belt.
