Water cooling device

A water cooling device, comprising:

• a communication structure with a first chamber and a second chamber, wherein the first chamber comprises a water inlet and plural inlet ports, and the second chamber comprises a water outlet and plural outlet ports;
• a driving device installed in at least one of the first chamber and the second chamber;
• and
• a water cooling structure at least located beside a first lateral surface and a second lateral surface of the communication structure, and comprising plural water tubes, wherein the plural water tubes are in communication with the plural inlet ports and the plural outlet ports, and a cooling medium is guided to flow through the plural water tubes,
• wherein the water outlet and the water inlet are in communication with an output/input end of a water block, wherein after the cooling medium flows from the first chamber to the plural water tubes and the cooling medium flows to the second chamber through the plural water tubes, the cooling medium exits to the water block and returns to the first chamber through the water block.