Abstract: The combustion of fossil fuels is accompanied by significant carbon emissions, posing a serious threat to the ecological environment. The development of new zero-carbon fuels has become one of the core pathways to achieve the dual carbon goals. Iron powder fuel, with its high volumetric energy density, abundant reserves, relatively low production and application costs, and easily recoverable combustion products, has emerged as one of the most promising zero-carbon energy carriers. This paper systematically reviewed the current status of research and application progress on iron powder fuel combustion technology both domestically and internationally. Firstly, based on differences in research focuses and technical methods, the combustion models of iron powder particles w-