Heat dissipation device of server system

The utility model relates to the technical field of servers, and discloses a heat dissipation device of a server system, which comprises a fixed box, a control box is fixedly mounted on the front side of the fixed box, a movable door is rotatably connected to the front side of the fixed box through a hinge, and a perspective window is arranged on the front side of the movable door. A liquid storage box is fixedly installed at the top end of the fixed box, and a liquid adding opening is fixedly formed in the top end of the liquid storage box. The heat dissipation device is provided with the first circulation heat dissipation assembly and the second circulation heat dissipation assembly, the first water pumping device can convey cooling liquid into the heat dissipation groove through the first intercommunication pipe and the first intercommunication box, the cooling liquid can conduct efficient heat dissipation on the fixing box, and the second water pumping device, the second intercommunication pipe and the se