According to the scattering characteristic theory of radar surface scattering target, combined with domestic and overseas situations, a new type of radar passive jamming material based on the combination structure of jamming rope and patch is proposed, which can realize obscuring jamming to radar. Based on the research on the scattering characteristics of surface scattering target, the jamming material structure with cubic shape is designed and the experimental research on the double-pass scattering attenuation characteristics of jamming material sample is performed. Theoretical simulation and experimental testing are used to provide theoretical and data support for the radar multi-band scattering attenuation characteristics of new radar passive jamming material based on the combination structure of jamming rope and patch.