Interrupted sampling repeater jamming (ISRJ) is an effective jamming method in modern electronic countermeasures, but its sampling duty ratio (SDR) should be no more than 50%. This paper proposes a distributed interrupted sampling repeater jamming solution to settle this problem based on the basic principle of the ISRJ. The simulation results show that this solution can break the limit of the SDR, and overcome the inherent defects of a single ISRJ jammer.