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Macroporous adsorption resin has a very large specific surface (generally ≥ 200m2 / g), which can adsorb macromolecular organics from solution. Compared with activated carbon, its adsorption performance (mainly physical adsorption) is easy to regenerate and reuse. As long as the hydrophilic and hydrophobic equilibrium conditions of the system are changed, the adsorption can be increased or desorbed. It is mainly used in wastewater treatment, sugar decolorization, concentration, purification and separation of antibiotics, vitamins, enzymes, amino acids and polypeptides, as well as carrier of chromatographic column packing and catalyst.