A repetitive pulsed intense X-ray source operating in 1～2Hz is described briefly. It is utilized the technology of repetitive plasma opening switch(RPOS) and Inductance Energy Storage. After RPOS opening swiftly, a high-voltage pulse reaching ～3MV is imposed on the bremsstrahlung radiating source diode and produced a intense X-ray pulse. The X-ray pulse parameters as following : peak dose-rate is 0.25MGy/s at 0.5m , average dose-rate is 0.15kGy/h at 1m, Full Width of Half Magnitude (FWHM) is ～100ns. The configuration, priciple and preliminary results are given in this paper.