To eliminate the unmovable state of a spherical shell body which enables returning of a traveling body to the normal attitude even when the attitude of the traveling body is worsened with respect to the spherical shell body to turn itself top side down.

This spherical shell body moving apparatus 8 is provided with a spherical shell body 9 freely rotatable with respect to the ground plane and a traveling body 10 which is arranged in the spherical shell body 9 to have a drive wheel 14 being in contact with the internal surface of the spherical shell body 9 and makes it run relatively with respect to the spherical shell body 9 to roll the spherical shell body. An inversion preventing means 11 is mounted on the traveling body 10 while being positioned in proximity to or in contact with the internal of the spherical shell body 9 opposite to the center of gravity of the traveling body sandwiching the center of the spherical shell body 9 to prevent the inversion of the traveling body 10 within the spherical shell body.