An ebullient cooling device includes a chamber, a heat sink, a heat receiving member, and a heat dissipating member. The chamber includes a heat conducting plate with a heat generating body on an outer side surface thereof, and an airtight space filled with coolant that undergoes a phase change between liquid and gas, on an inner side of the heat conducting plate. The heat sink is provided on the outer side surface of the heat conducting plate. The heat receiving member is provided on an inner side surface of the heat conducting plate so as to oppose the heat generating body with the heat conducting plate sandwiched therebetween, and transfers heat generated at the heat generating body to the coolant. The heat dissipating member is provided on the inner side surface of the heat conducting plate, receives heat transferred by the coolant, and dissipates the heat to the heat sink.