A body position fixing apparatus includes: a first pressing tool including a first pressing surface to be pressed against one of a pair of anterior superior iliac spines of the human body, that is closer to the placement surface； a second pressing tool including a second pressing surface to be pressed against another one of the pair of anterior superior iliac spines, that is more distant from the placement surface； a third pressing tool including a third pressing surface to be pressed against a pubic symphysis of the human body； a fourth pressing tool including a fourth pressing surface that faces the first pressing surface, the second pressing surface, and the third pressing surface, and that is to be pressed against a back of a lumbar region of the human body； an indicating rod； and a rotation mechanism that supports the indicating rod to make the indicating rod rotatable at a discretionary angle relative to each of the placement surface and a fixed reference plane including the first pressing surface, the second pressing surface, and the third pressing surface.
