Ni3+ and Cr3+ doped spinel infrared radiation material was prepared by solid phase sintering. Microstructure and performance of that were studied by XRD, IR and IRE2 infrared radiant instrument. Ni3+ and Cr3+ occupied the position in the structure by right coordination and formed (□, Fe) (□，Mn)2O4 spinel structure, which changes lead to improve of infrared radiation property as the content of Ni2O3 increases. The infrared radiation properties are obtained in the samples, exhibiting the infrared emissivities of 0.93 in the whole bands, and infrared emissivities of 0.97 in the bands within 8~25μm too, but with low infrared emissivities in the bands less than 8μm.