Liquid cooling heat dissipation device and heat dissipation system

The invention discloses a liquid cooling heat dissipation device and a heat dissipation system, the liquid cooling heat dissipation device comprises a paraffin liquid cooling heat dissipation device and a micro-channel heat dissipation cold plate, one surface of the paraffin liquid cooling heat dissipation device is connected with a heat source, and the other surface of the paraffin liquid coolingheat dissipation device is connected with the micro-channel heat dissipation cold plate; the heat dissipation system comprises a liquid cooling heat dissipation device, a circulating water pump, a sensing system, a controller, a liquid storage tank and a fan, wherein the paraffin liquid cooling heat dissipation device and the micro-channel heat dissipation cold plate are combined for use; meanwhile, the heat dissipation system is adopted for intelligent control, so timely cooling can be effectively conducted according to the temperature change of a heat source, and the heat dissipation degreeof the heat dissipation s