Abstract: Due to the impact of energy crisis and environmental pollution, the research of green solid acid catalysts in catalyzing the conversion of renewable biomass into various chemicals has become a hot spot in recent years. In this paper, the research progress of solid acid in biomass catalytic conversion was reviewed. Firstly, types of solid acids that could be used for biomass conversion were listed. Secondly, the research status of solid acid catalysts in catalyzing the biomass conversion to produce biomass fuels, biomass platform compounds and bio-based materials was introduced. Finally, the existing problems in the application were summarized, and then the suggestions and ideas for solving these problems were recommended.