A liquid cooling heat dissipating device with heat tubes gathering heat sources includes a cold plate being disposed on the heat sources and a or a plurality of heat tubes disposed between the heat sources and the cold plate to contact with the heat sources completely, and an end of the respective heat tube is fixedly attached to the cold plate, respectively. The respective heat tube is sealed with a capillary material and a vapor-liquid working median contained inside. The respective heat tube contacts with the heat sources at different spots to gather the heat for being cooled with the cold plate simply.