The utility model discloses an electronic equipment two -stage liquid refrigeration source system, including a plurality of electronic equipment and electrical control box, the pressure sensor that tangible one -tenth cooling liquid exit is all connected to arbitrary electronic equipment's input is connected the gate valve that tangible becomes back the liquid mouth with solenoid valve, output, and return the liquid mouth and communicate to the water tank, it can be to returning the circulation circuit that liquid is cooled down and is exported cooling liquid exit to to be equipped with between water tank and the solenoid valve, the electronic equipment input still is connected with temperature sensor, semiconductor water cold die group in the import department of solenoid valve in order, circulation circuit includes the circulating pump that sets up in order at water tank outlet I, relief valve I, flowmeter I, gate valve I, check valve I, filter, solenoid valve I, finned tube heat exchanger, temperature sensor I, temperature sensor I is connected to semiconductor water cold die group, temperature sensor I is through solenoid valve hui lian to water tank simultaneously. This electronic equipment liquid refrigeration source system volume is less, the reliability is high, easy regulation and control, efficiency obtain improving.