Tea polyphenols are a general term for polyphenols in tea, including flavanols, anthocyanins, flavonoids, flavonols and phenolic acids. Active substances such as tea polyphenols have detoxification and anti-radiation effects, which can effectively prevent radioactive substances from invading the bone marrow and excreting radioactive elements. The extraction of tea polyphenols by macroporous adsorption resin has the advantages of high adsorption rate, convenient analysis and high product purity. The macroporous adsorption resin produced by Suzhou Bojie Resin Technology Co., Ltd. extracts tea polyphenols, which has large adsorption capacity, convenient desorption and high regeneration rate, and is widely used in tea polyphenol extraction.