PROBLEM TO BE SOLVED: To apply an external force having an appropriate direction and an appropriate strength to an appropriate region of the pelvis in order to correct the strain depending on the state of the pelvis strain that differs depending on the user. A supporter (1) includes a human body contact supporter (2) mounted so as to be wrapped around a user's waist, and a correction wing (3) attached to an outer surface of the human body contact supporter (2). Female hook-and-loop fasteners are provided on substantially the entire outer surface of the human body contact supporter 2. Surface fasteners 7a, 7c, 7e facing from the right end to the center and surface fasteners 7b, 7d, 7f facing from the left end to the center are provided side by side on the inner surface of the correction blade 3, respectively. These face fasteners are male face fasteners. For example, the practitioner joins each of the surface fasteners 7a to 7f to a plurality of appropriately spaced regions on the outer surface of the human body contact supporter 2 so that the practitioner can select an appropriate region according to the distortion of the pelvis of the user. Forces of direction and appropriate strength can be applied. [Selection diagram] Figure 1