Server cooling system and heating system

The invention discloses a server heat dissipation system and a heating system. The heat dissipation system comprises a water inlet pipe, a water distributor pipeline, a water collector pipeline, a water outlet pipe and one or more board card module heat dissipation units. The board card module heat dissipation unit comprises a plurality of board cards, a heat dissipation plate is installed betweenevery two adjacent board cards, and the board cards are attached to the two faces of the heat dissipation plates respectively; a water inlet and a water outlet are formed in the heat dissipation plate; the water inlet pipe is connected with a water distributor pipeline, and the water distributor pipeline is connected with water inlets of the heat dissipation plates; a water outlet of each heat dissipation plate is connected with a water collector pipeline; and the water collector pipeline is connected with the water outlet. The heat dissipation system can effectively take away heat generatedduring operation of the hi