To provide an ebullient cooling device generating power by utilizing boiling of liquid refrigerant, and promoting heat transfer.

This ebullient cooling device comprises: a storage section 21 storing the liquid refrigerant receiving the heat of a heating element Z; a turbine blade section 41 disposed in the liquid refrigerant, and at least partially disposed in a region where bubbles generated by boiling of the liquid refrigerant receiving the heat of the heating element Z passes; a transmitting section 42 for transmitting the rotation of the turbine blade section 41; and a power generator 5 connected with the transmitting section 42 and generating power by rotation of the turbine blade section 41.