A urination disorder treatment device comprising: a pair of application electrodes which are disposed at the back of a sacral bone of a person to be treated to supply an electrical stimulation signal from the back of the sacral bone; a signal supply source from which the pair of application electrodes supply the stimulation signal; a detection electrode which is disposed on a surface of a toe of a person to be treated to detect a biological signal of the toe which is generated in response to the stimulation signal; a measurement portion which is connected to the detection electrode to measure electromyographic data of the toe based on the biological signal of the toe of a person to be treated; a control portion which is connected to the measurement portion to control supply of the stimulation signal to the sacral bone by the pair of application electrodes and also compares signal data of the stimulation signal with electromyographic data of the toe to judge whether a nerve which passes through the sacral bone or the vicinity of the sacral bone is appropriately stimulated by the stimulation signal or not; and a display portion which informs a person to be treated of a judgment result by the control portion, wherein the biological signal of the toe to be detected is generated by reactions of a tibial nerve and/or a peroneal nerve extended up to the tiptoe which are connected to a nerve passing through the sacral bone or the vicinity of the sacral bone by way of an ischiadic nerve, and the control portion stops the stimulation signal when a frequency pattern of a pulse wave of the signal data of the stimulation signal is different from that of a frequency pattern of a pulse wave of the electromyographic data by comparing the frequency pattern of the pulse wave of the signal data of the stimulation signal with the frequency pattern of the pulse wave of the electromyographic data. a pair of application electrodes which are disposed at the back of a sacral bone of a person to be treated to supply an electrical stimulation signal from the back of the sacral bone; a signal supply source from which the pair of application electrodes supply the stimulation signal; a detection electrode which is disposed on a surface of a toe of a person to be treated to detect a biological signal of the toe which is generated in response to the stimulation signal; a measurement portion which is connected to the detection electrode to measure electromyographic data of the toe based on the biological signal of the toe of a person to be treated; a control portion which is connected to the measurement portion to control supply of the stimulation signal to the sacral bone by the pair of application electrodes and also compares signal data of the stimulation signal with electromyographic data of the toe to judge whether a nerve which passes through the sacral bone or the vicinity of the sacral bone is appropriately stimulated by the stimulation signal or not; and a display portion which informs a person to be treated of a judgment result by the control portion, wherein the biological signal of the toe to be detected is generated by reactions of a tibial nerve and/or a peroneal nerve extended up to the tiptoe which are connected to a nerve passing through the sacral bone or the vicinity of the sacral bone by way of an ischiadic nerve, and the control portion stops the stimulation signal when a frequency pattern of a pulse wave of the signal data of the stimulation signal is different from that of a frequency pattern of a pulse wave of the electromyographic data by comparing the frequency pattern of the pulse wave of the signal data of the stimulation signal with the frequency pattern of the pulse wave of the electromyographic data.