Liquid cooling heat dissipation system of server

The invention relates to a server liquid cooling heat dissipation system. A liquid cooling cabinet in the server liquid cooling heat dissipation system is provided with a liquid inlet manifold and a liquid outlet manifold; the first water segregator comprises a first liquid inlet pipe, a plurality of first valve bodies and a plurality of first branch pipes, the two ends of the first liquid inlet pipe communicate with the liquid supply pipe, the first valve bodies are arranged on the first liquid inlet pipe at intervals, one end of each first branch pipe is located between every two adjacent first valve bodies and communicates with the first liquid inlet pipe, and the other end of each first branch pipe communicates with the liquid inlet manifold; the first water collector comprises a first liquid outlet pipe, a plurality of second valve bodies and a plurality of second branch pipes, the two ends of the first liquid outlet pipe are communicated with the liquid return pipe, the second valve bodies are arranged