An electrical stimulation device comprising: a first electrode, a second electrode, a third electrode, and a fourth electrode; and an electrical stimulation generation section configured to supply an electrical stimulation signal to each of the first electrode, the second electrode, the third electrode, and the fourth electrode, wherein: two of the electrodes are set as a first electrode group, and the other two electrodes are set as a second electrode group, the electrical stimulation generation section is configured to supply, to the first electrode group, an electrical stimulation signal according to a first stimulation pattern and configured to supply, to the second electrode group, an electrical stimulation signal according to a second stimulation pattern; the first stimulation pattern (A1,..., A4) is set so that an electrical stimulation signal for changing stimulation intensity according to a first waveform is supplied to one electrode of the first electrode group, and an electrical stimulation signal for changing stimulation intensity according to a second waveform is supplied to the other electrode of the first electrode group, the second waveform being increased and decreased in conjunction with the first waveform; the second stimulation pattern (B1,..., B4) is set so that an electrical stimulation signal for changing stimulation intensity according to a third waveform is supplied to the one electrode of the second electrode group, and an electrical stimulation signal for changing stimulation intensity according to a fourth waveform is supplied to the other electrode of the second electrode group, the fourth waveform being increased and decreased in conjunction with the third waveform; the electrical stimulation of the first stimulation pattern and the electrical stimulation of the second stimulation pattern are alternately performed; characterized by: the first waveform and the second waveform are increased so that the second waveform reaches a peak after the first waveform reaches a peak, and the third waveform and the fourth waveform are increased so that the fourth waveform reaches a peak after the third waveform reaches a peak. a first electrode, a second electrode, a third electrode, and a fourth electrode; and an electrical stimulation generation section configured to supply an electrical stimulation signal to each of the first electrode, the second electrode, the third electrode, and the fourth electrode, wherein: two of the electrodes are set as a first electrode group, and the other two electrodes are set as a second electrode group, the electrical stimulation generation section is configured to supply, to the first electrode group, an electrical stimulation signal according to a first stimulation pattern and configured to supply, to the second electrode group, an electrical stimulation signal according to a second stimulation pattern; the first stimulation pattern (A1,..., A4) is set so that an electrical stimulation signal for changing stimulation intensity according to a first waveform is supplied to one electrode of the first electrode group, and an electrical stimulation signal for changing stimulation intensity according to a second waveform is supplied to the other electrode of the first electrode group, the second waveform being increased and decreased in conjunction with the first waveform; the second stimulation pattern (B1,..., B4) is set so that an electrical stimulation signal for changing stimulation intensity according to a third waveform is supplied to the one electrode of the second electrode group, and an electrical stimulation signal for changing stimulation intensity according to a fourth waveform is supplied to the other electrode of the second electrode group, the fourth waveform being increased and decreased in conjunction with the third waveform; the electrical stimulation of the first stimulation pattern and the electrical stimulation of the second stimulation pattern are alternately performed; two of the electrodes are set as a first electrode group, and the other two electrodes are set as a second electrode group, the electrical stimulation generation section is configured to supply, to the first electrode group, an electrical stimulation signal according to a first stimulation pattern and configured to supply, to the second electrode group, an electrical stimulation signal according to a second stimulation pattern; the first stimulation pattern (A1,..., A4) is set so that an electrical stimulation signal for changing stimulation intensity according to a first waveform is supplied to one electrode of the first electrode group, and an electrical stimulation signal for changing stimulation intensity according to a second waveform is supplied to the other electrode of the first electrode group, the second waveform being increased and decreased in conjunction with the first waveform; the second stimulation pattern (B1,..., B4) is set so that an electrical stimulation signal for changing stimulation intensity according to a third waveform is supplied to the one electrode of the second electrode group, and an electrical stimulation signal for changing stimulation intensity according to a fourth waveform is supplied to the other electrode of the second electrode group, the fourth waveform being increased and decreased in conjunction with the third waveform; the electrical stimulation of the first stimulation pattern and the electrical stimulation of the second stimulation pattern are alternately performed;