An earthworm moves in the ground, underground and a narrow crevice using many lots of segments. This movement is called peristalsis, and differs from movement of other animals. And this movement is very simple operation compared with movement of other animals. It is thought that a peristalsis is useful in the calamity spot. However, an author does not know the reference seen about the peristalsis. In case equipment will be developed from now on, it is thought that the elucidation of the move mechanism of an earthworm that used the peristalsis is very important. In this research, a camera and equipment are used and it aims at solving the detailed movement mechanism of an earthworm.