A dual polarized multibeam antenna based on substrate integrated waveguide technology is proposed, which utilizes Butler matrix as the beamforming network to excite pairs of orthogonal radiating slots，forming dual polarization multi-beam radiations. To configure the exciting signals of orthogonal slots as in-phase or out-of-phase, dual polarized co-beam or independent-beam can be achieved accordingly，which can be adopted in different wireless communication scenarios, through space beam diversity or polarization diversity scheme，to enhance wireless communication capacity. Finally，a prototype of dual polarized independent-multibeam antenna is implemented at X-band by using substrate integrated waveguide technology. Simulation results show that the developed antenna has an impedance bandwidth of 9.64-10.25 GHz; and by exciting four input ports of the antenna，four dual-polarized independent beams are achieved accordingly with the gain about 14 dBi，which verifies the proposed design concept and method.