A urination disorder treatment device includes a pair of body-surface electrode pads to supply an electrical stimulation signal from a back of a sacral bone, a stimulation signal control output circuit from which the pair of body-surface electrode pads supply the stimulation signal, a first measurement portion to measure electrocardiographic data based on a signal of electrical activity of the heart of the person to be treated, and a control portion to control supply of the stimulation signal based on an electrocardiographic waveform measured by the first measurement portion. A heart rate of the person to be treated may be judged to be a normal value from the electrocardiographic data, the control portion may delay timing of an output pulse from the pair of body-surface electrode pads so as not to be synchronized with the atrial systole P or the ventricular systole R of the electrocardiographic waveform.