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Spin transport in heterostructures containg antiferromagnetic materials has attracted a lot of attention due to the enhanced transmission of the pure spin current and the interesting orientation dependence. Compared with NiO, Cr2O3 is a better-defined antiferromagnet for its uniaxial anisotropy. Here we report a spin transport study of YIG/Cr₂O₃/Pt heterostructures, in which both YIG and Cr₂O₃ are grown by PLD. RHEED patterns indicate that Cr2O3 is textured polycrystalline on single crystal YIG with preferred c-axis along the easy axis of the YIG. We perform both magnetoresistance(MR) and spin Seebeck effect (SSE) measurements. When the in-plane magnetic field is applied along or perpendicular to the c-axis of textured Cr₂O₃, the high-field MR responses in both directions resemble those of the YIG/Pt. When the field is along the c-axis of textured Cr2O3, MR shows an additional peak feature ~1T at 5 K, and the peak position moves to higher fields at higher temperatures, indicative of the spin-flop transition of Cr2O3. The SSE signal shows a sign reversal at low temperature, which does not exist in YIG/Pt and therefore is also attributed to the Cr₂O_3.