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Thrust vector test equipment is a device for super maneuverability test of fighter after stall maneuver and direct force control mode. Thrust vector test requires accurate flow control of multi-channel high-pressure and large-flow airflow. Based on the analysis of the characteristics of the thrust vector test device, the multi-model control strategy is put forward. According to the characteristics of different stages and the requirements of control tasks, control strategies based on expert system, intelligent PID and compensation decoupling are adopted to achieve high-precision flow control under high pressure and large flow conditions. From the results of debugging and operation, the accuracy of flow control reaches 3-5‰, which meets the requirement of flow accuracy in thrust vector test.