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This invention discloses a method for screening the stability of biomass-derived hard carbon raw materials. The method involves treating biomass materials from different sources and batches that can be used to prepare hard carbon with an acid solution, then testing the sugar content, ash content, and coin capacity of the finished hard carbon. The method utilizes the relationship between these parameters to simply and quickly screen out biomass-derived hard carbon raw materials with good stability, thereby obtaining biomass-derived hard carbon materials with excellent battery cycle stability and good electrochemical performance. When the biomass ash content, sugar content, and coin capacity of the biomass-derived hard carbon after acid treatment satisfy the relationship 10≤α / β×σ≤50, an effective balance between biomass ash and sugar content can be achieved. This balance allows for the formation of a specific porous structure, increasing sodium storage sites and improving sodium ion conductivity, while also preventing excessive ash and impurities from affecting the electrochemical performance of the hard carbon material. This ensures the high energy storage capacity and excellent cycle stability of the hard carbon material.