In order to achieve broadband Radar Cross-Section(RCS) reduction, a RCS reduction technology based on checkerboard metasurface is proposed, which can achieve broadband RCS reduction and polarization with insensitivity. We also introduces the principle of improving the RCS reduction bandwidth and designs a X band checkerboard metasurface by the electromagnetic scattering canceling technology so that the electromagnetic wave is dispersed to different directions after the reflection of the metasurface, in which way the RCS of it is reduced. In this study, double-resonant checkerboard metasurface is putted forward to overcome the problem of phase convergence which is common among ordinary checkerboard metasurfaces. Double-resonant checkerboard metasurfaces consist of two different structures of two different resonant frequency can broaden the unit homogeneous phase difference, in which way the 10 dB RCS reduction bandwidth is from 8 to 14.5Ghz with polarization andinsensitivity. The simulation results show that the double-resonance checkerboard metasurface can realize RCS reduction of wide bandwidth and polarization with insensitivity.