The utility model provides a satellite ground testing cooling system, includes main tuber pipe, shunt tubes, the ware that converges, centrifugal fan, the general mood that produces centrifugal fan flows delivers to main tuber pipe, and main tuber pipe is received general mood drifting to the ware that converges, the ware that converges and is shunted general mood stream, then is close to instrument and equipment end, realization forced -air cooling in with general mood drifting to equipment compartment through a plurality of shunt tubess. The utility model discloses cooling system need be at satellite electronic equipment surface mounting extra equipment, does not compare with prior art to realize simply, and the engineering volume is little, can not produce the steam that condenses on the electronic equipment surface, can not influence electronic equipment safety, in addition the utility model discloses cooling system adopts the tuber pipe of flexibility to carry out the accuracy heat dissipation to power electronic equipment, can satisfy a large amount of complicated electronic equipment's heat dissipation demand, and the pipeline is sealed up in sealing of adopting simultaneously, can improve the radiating efficiency, reduces the heat rejection apparatus noise.