A performance test system of AFCS was designed, combined with the software and hardware debugging work. The software flow of safety boundary testing and product"s working logic were optimized and the problems of interface protocol correctness, real-time data collection and data queue security in system debugging were solved. The results show that the test system can complete real-time data acquisition and working state control of the product. Compared with the existing testing equipment, the product testing process did not require manual intervention, and also the accuracy and efficiency of the measurement were significantly improved.