Abstract
In this paper, we descried a mobile robot the method of moving the uneven terrain by to change an external environment. Generally, a rescue robot has flipper arm and crawler to traverse rough terrain. However, Mobility limit is provided at the time of design of body. When the robot has a function that changes the external environment, a mobility of the robot is extended. Termites build a huge mound in arid region. They make mud pellets using the soil, feces and saliva. We focused on this building function of the termites, and apply to a robot for changing environment. To implement the function, we used polyurethane foam instead of mud pellet. The experiment showed that the possibility of a robot traverses high step and a deep ditch. This result means the robot obtained a function to change external environment.