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A cooling system with high and low temperature double circulations was built. On the basis of analysis of cooling demand of the various components of armored vehicles,the control strategy of the cooling system was designed ,which were based on preset MAP and fuzzy control. The Coupling Model of the cooling system and the control system was built in Matlab/Simulink software. The simulation results showed the control strategy was effective. Experiments on cooling system test bench validated the control strategy was workable. The research indicate that the control strategy based on presetting MAP and fuzzy control could satisfy the control demand of high and low temperature double circulations cooling system,which at the same time ensure that the temperature of coolant at the outlet of engine block fluctuate no more than 1 ℃,the temperature of low temperature circulation below the set value.