Vancomycin is a -lactam antibiotic, which has a good therapeutic effect on infectious diseases caused by infection of sensitive pathogens, respiratory tract, urinary tract and skin soft tissue. Such as acute tonsillitis, angina, otitis media, sinusitis, bronchitis, pneumonia and other respiratory infections caused by sensitive bacteria. It is a commonly used antibacterial drug in the clinic. The macroporous adsorbent resin provided by Suzhou Bojie Resin Technology Co., Ltd. can effectively extract cephalosporin, and has the advantages of large adsorption capacity, high adsorption rate, fast adsorption rate, good selective separation effect and high extraction purity. The resin has stable physical and chemical properties, long service life, convenient desorption and regeneration, and has been widely used for the extraction of cephalosporin, and has high cost performance.