Aiming at the shortcomings of complex and slow data transmission of traditional high speed ADC dynamic performance test system. In this paper, a simple method for dynamic performance testing of high speed ADC is proposed, which combines the advantages of FMC separation design and PCI DMA high speed data transmission to test the dynamic performance of ADC. The principle and key technology of the test system are introduced, and the testing method is verified. The verification results show that the method is correct and feasible, and has the advantages of high repetition rate and high speed data transmission. It can be widely used and popularized.