An electrostatic spray device comprising: a liquid spray unit including a nozzle configured to spout a liquid; a voltage application unit configured to apply a voltage between the liquid spray unit and a heteropolar portion functioning as a pole opposite from a pole of the liquid spray unit to generate a taylor cone of a liquid at a distal end of the nozzle, to draw the liquid in a jet portion from a distal end of the taylor cone and to divide the drawn liquid into liquid particles by electrostatic repulsion; and a stabilization electrode configured to maintain a spraying state of the liquid in a stable spraying state in which the liquid is stably sprayed with a maximum grain diameter of a particle diameter of 100 μm or less in a steady spraying even when a pressure is applied to the liquid to supply the nozzle with the liquid, wherein the stabilization electrode: has an electric potential identical to an electric potential of the liquid spray unit; and is disposed such that the distal end of the stabilization electrode is located rearward with respect to a distal end outer peripheral edge of the nozzle, and an inner peripheral edge of the distal end of the stabilization electrode is located near the distal end outer peripheral edge of the nozzle, such that the jet portion formed at a front of the nozzle by a linear extension of the liquid has a length longer than a length of the jet portion before the stabilization electrode is provided. a liquid spray unit including a nozzle configured to spout a liquid; a voltage application unit configured to apply a voltage between the liquid spray unit and a heteropolar portion functioning as a pole opposite from a pole of the liquid spray unit to generate a taylor cone of a liquid at a distal end of the nozzle, to draw the liquid in a jet portion from a distal end of the taylor cone and to divide the drawn liquid into liquid particles by electrostatic repulsion; and a stabilization electrode configured to maintain a spraying state of the liquid in a stable spraying state in which the liquid is stably sprayed with a maximum grain diameter of a particle diameter of 100 μm or less in a steady spraying even when a pressure is applied to the liquid to supply the nozzle with the liquid, wherein the stabilization electrode: has an electric potential identical to an electric potential of the liquid spray unit; and is disposed such that the distal end of the stabilization electrode is located rearward with respect to a distal end outer peripheral edge of the nozzle, and an inner peripheral edge of the distal end of the stabilization electrode is located near the distal end outer peripheral edge of the nozzle, such that the jet portion formed at a front of the nozzle by a linear extension of the liquid has a length longer than a length of the jet portion before the stabilization electrode is provided. has an electric potential identical to an electric potential of the liquid spray unit; and is disposed such that the distal end of the stabilization electrode is located rearward with respect to a distal end outer peripheral edge of the nozzle, and an inner peripheral edge of the distal end of the stabilization electrode is located near the distal end outer peripheral edge of the nozzle, such that the jet portion formed at a front of the nozzle by a linear extension of the liquid has a length longer than a length of the jet portion before the stabilization electrode is provided.