In order to improve the efficiency of radar anti-jamming training, a data-level radar anti-jamming simulation training system is designed. On the basis of constructing the system architecture, the calculation model of radar performance parameters and the signal model of radar blanket jamming and deception jamming are analyzed. Design and implement the software of training scene editing, radar simulation terminal, jammer simulation terminal and radar anti-jamming training strategy. By constructing a typical tactical countermeasure scenario, the effectiveness of several anti-jamming measures is simulated by taking anti-narrow pulse jamming as an example. The system has been applied to teaching and training practice, which shows that the system has high cost performance and certain promotion value.