Theadsorptionprocessesofantibioticsofthetetracylinegroup(ATG)byseveralhome-madesulfocationitesarestudiedinthispaper.TheresultsshowthattheadsorptionmaybeofnonequivalentnormalityundercertainpHcondition.Theadsorptionmechanismisdiscussedwithinfraredspectrometry.ItcanbeconcludedthatATGcaninteractwithsulfocationitesbyionexchangemechanismorion-transfermechanismorbothofthem.