Dr. Li, Dr. Nakagawa, and Prof. Tomishige in their review on pages 583–594 describe the modification of Ni catalysts for the conversion of biomass tar to synthesis gas. Modification with CeO2 affords high activity and coke resistance by the formation of Ni-CeO2 nanocomposite. Modification with Pt gives the ability of self-activation, resulting in a Pt-Ni alloy. The self-regeneration property is attached to the catalyst by further modification with MgO via the formation and reduction of the NiO-MgO solid solution. These ideas will be helpful for designing new multi-functional catalysts for biomass gasification to synthesis gas.