The DB 34/T 1333-2018 standard specifies a high-performance liquid chromatograph method for the analysis of benzene series in water-based paints. The standard provides a scientific basis for detecting the content of benzene series (such as benzene, toluene, Xylene, etc.) in water-based paints, ensuring that Coating products meet environmental protection and safety requirements. High performance liquid chroma-tography, HPLC (HPLC) can accurately determine the concentration of benzene series in water-based paints, helping manufacturers control harmful substances in Coatings and reduce the impact on human health and the environment. The standard describes in detail the preparation of samples, the analysis process, equipment requirements and the calculation method of the results to ensure the accuracy and Repeatability of the analysis. The implementation of this standard helps to promote the development of the Coatings industry in a green and environmentally friendly direction, and improve the mass and market competitiveness of Coatings products.