Moles (Talpidae) have been said traditionally to use each chamber of their tunnel systems for different purpose such as sleeping, hunting, food storage, and defecation. The Japanese shrew-mole Urotorichus talpoides is a small-sized mole and forages on the ground surface more frequently than the typical large-sized moles. In this study, we observed all behaviors of the field-caught mole in an artificial tunnel system for successive 8 nights. The artificial tunnel was made of plaster and had three chambers along the single tunnel. At night, the mole was video-recorded through a transparent cover on the tunnel under the weak light (6-8 lux). As a result, most moles used the chamber at the deepest part as a sleeping site and the other chambers as some food storage sites. Almost all feces were found outsides the tunnel. Thus, they used chambers for different purposes. At night, they repeated a short active phase and a slightly longer resting phase than the former. In several cases, the resting period tended to be longer as the previous active period became longer.