This standard specifies the terms, definitions, classification, technical requirements, test methods and inspection rules of carbon composite phosphoric acid lithium iron anode materials for lithium ion batteries. Lithium iron phosphoric acid, as a high safety and high stability anode material, is widely used in lithium ion batteries. This standard details the technical requirements of the material, including particle size, specific surface area, conductivity, etc., and provides corresponding test methods to ensure the performance and mass stability of the material. Applicable to the production, testing and Application of lithium iron phosphoric acid anode materials.