The effect of deformation properties of individual granules on the consolidation process of granule beds was investigated. Four kinds of alumina granules were used as sample materials for the tests. The consolidation process of granule beds was examined using a uniaxial compression tester, and the deformation behavior of a single granule under the compressive force was investigated with a diametral microcompression testing machine. The deformation curve of a single granule was characterized by the yield value and the breakage force, which were correlated with the consolidation starting stress of the granule bed. As a result, it was found that the yield value of a single granule was proportional to the compressive force between granules, which was calculated by applying Rumpf's equation for the granule bed at the consolidation starting stress.