To provide an electrolytic cell in which flexibility in a structural design is high, and which is suitable to outdoor installation.

The electrolytic cell 100 includes: a pair of electrodes 30 in which the first planar electrode 10 and the second planar electrode 20 are arranged so as to be confronted each other; and a solution feed part 40 of feeding an electrolytic solution S to a space between the pair of the electrodes 30, wherein the electrolytic cell electrolyzes the electrolytic solution to generate a gas. Then, in the electrolytic cell 100, the pair of the electrodes 30 has flexibility to be curved or to be bendable in a direction perpendicular to a plane. In the electrolytic cell 100, each insulating solution-retaining sheet 50 is held between the pair of the electrodes 30 in which the first electrode 10 and the second electrode 20 are arranged so as to face each other.