Aiming at the limitations of traditional water pump test system on automobile electronic water pump test, an automobile electronic water pump test system based on embedded system was developed, which was compatible with a variety of automobile electronic water pumps. The hardware composition, software design and control strategy of the test system were introduced. The embedded controller was designed to realize the parameter acquisition and working condition control of the system. The control signal of ECU to the automobile electronic water pump was simulated by inputting and outputting RS485, PWM, LIN and CAN signals; PID algorithm was used to control pipeline flow; the upper computer of the system was designed; the system acceptance was completed by using the automobile electronic water pump products of a certain automobile enterprise. The system can be used to test the performance of automotive electronic water pump with different control signals.