A therapy device capable of relieving constipation by applying stimulation from a back to a lumbar spine and a vicinity thereof, the device includes: an ultrasound signal oscillation circuit and a head, which is placeable from the back on at least a region between a third lumbar spine and a fourth lumbar spine, a region between the fourth lumbar spine and a fifth lumbar spine, or any one or two or more of the third lumbar spine, the fourth lumbar spine, and the fifth lumbar spine. The head includes a piezoelectric element, which generates ultrasound capable of being transmitted from the back to the lumbar spine or a region between lumbar spines, and the head is sized to be placeable on the region between the lumbar spines, and is capable of outputting ultrasound vibration having frequency and power capable of stimulating a pressure point or nerve relating to constipation.
