Atomization cooling equipment comprising: cooling water supplying equipment (12, 14, 16, 20, 22) for supplying pressurized cooling water; an electrified atomization head for electrifying and atomizing atomization water of the pressurized cooling water supplied by the cooling water supplying equipment (12, 14, 16, 20, 22), the electrified atomization head being installed in cooling target space; and a voltage application unit for applying a voltage to the electrified atomization head; wherein: the electrified atomization head is provided with: an atomization nozzle, connected to a pipe to receive the pressurized cooling water, for atomizing the cooling water to water particles converted by jetting the cooling water to external space, an induction electrode unit (44, 52, 60) disposed in a jetting space side of the atomization nozzle, a water-side electrode unit which is a part of the atomization nozzle using an electrically conductive material to contact the cooling water supplied to the atomization nozzle; and a water-leakage preventing valve located between the pipe and the water-side electrode unit, the water-leakage preventing valve comprising a circular-plate-like rubber valve member having a slit formed at the center of the valve member which is openable by deformation due to the supply of the pressurized cooling water; wherein the voltage application unit is arranged to apply an external electric field, which is generated by applying a voltage between the induction electrode unit (44, 52, 60) and the water-side electrode unit, to the cooling water in a jetting process in the atomization nozzle so as to electrify the water particles. cooling water supplying equipment (12, 14, 16, 20, 22) for supplying pressurized cooling water; an electrified atomization head for electrifying and atomizing atomization water of the pressurized cooling water supplied by the cooling water supplying equipment (12, 14, 16, 20, 22), the electrified atomization head being installed in cooling target space; and a voltage application unit for applying a voltage to the electrified atomization head; wherein: the electrified atomization head is provided with: an atomization nozzle, connected to a pipe to receive the pressurized cooling water, for atomizing the cooling water to water particles converted by jetting the cooling water to external space, an induction electrode unit (44, 52, 60) disposed in a jetting space side of the atomization nozzle, a water-side electrode unit which is a part of the atomization nozzle using an electrically conductive material to contact the cooling water supplied to the atomization nozzle; and a water-leakage preventing valve located between the pipe and the water-side electrode unit, the water-leakage preventing valve comprising a circular-plate-like rubber valve member having a slit formed at the center of the valve member which is openable by deformation due to the supply of the pressurized cooling water; wherein the voltage application unit is arranged to apply an external electric field, which is generated by applying a voltage between the induction electrode unit (44, 52, 60) and the water-side electrode unit, to the cooling water in a jetting process in the atomization nozzle so as to electrify the water particles. the electrified atomization head is provided with: an atomization nozzle, connected to a pipe to receive the pressurized cooling water, for atomizing the cooling water to water particles converted by jetting the cooling water to external space, an induction electrode unit (44, 52, 60) disposed in a jetting space side of the atomization nozzle, a water-side electrode unit which is a part of the atomization nozzle using an electrically conductive material to contact the cooling water supplied to the atomization nozzle; and an atomization nozzle, connected to a pipe to receive the pressurized cooling water, for atomizing the cooling water to water particles converted by jetting the cooling water to external space, an induction electrode unit (44, 52, 60) disposed in a jetting space side of the atomization nozzle, a water-side electrode unit which is a part of the atomization nozzle using an electrically conductive material to contact the cooling water supplied to the atomization nozzle; and a water-leakage preventing valve located between the pipe and the water-side electrode unit, the water-leakage preventing valve comprising a circular-plate-like rubber valve member having a slit formed at the center of the valve member which is openable by deformation due to the supply of the pressurized cooling water; wherein the voltage application unit is arranged to apply an external electric field, which is generated by applying a voltage between the induction electrode unit (44, 52, 60) and the water-side electrode unit, to the cooling water in a jetting process in the atomization nozzle so as to electrify the water particles.