This paper describes a pedal mechanism which moves by pedal locomotion like a snail. The pedal mechanism moves forward by propagation of pedal wave which has the contraction to the moving direction. The pedal mechanism was applied with a link mechanism using SMA (Shape Memory Alloy) as an actuator. The experiment for locomotion of the pedal mechanism was carried out. As a result, it was found that the locomotion speed of the pedal mechanism was in proportion to both the propagation speed of a pedal wave and the number of pedal wave passed on the sole per second, and the locomotion speed had the upper limit because of the mechanism friction of the link mechanism.
