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----------(SchoolofEnergyandEnvironmentalEngineeringHebeiUniversityofTechnologyTianjin300401,China)Severalcommonpurificationtechnicsusedfortreatingcadmiumwastewaterwerereviewed,whoseadvantagesanddisadvantagesweresummarized,andtheexistingproblemswerepointedout.Aftercomparison,itwasfoundthattheremovalefficiencyofthelowconcentrationcadmiumionswasbetterwiththeadsorptionmethodandthecoagulationsedimentationmethod,whichshowedbroadapplicationprospects.Theadsorptionmethodhadawiderangeofapplication,andwouldnotcausepollutiontotheenvironment;thecoagulationsedimentationprocesswassimple,technologywasmature,themedicinewascheap,andthecyclewasshortandeffective.Finally,thefuturedevelopmenttrendofcadmiumpollutedwatertreatmenttechnologywasprospected,totreatlowconcentrationcadmiumpollutedsourcewaterwithadsorptionmethodorcoagulationsedimentationmethodorthecombinationofthesetwotreatmenttechnologiesandothertechnologies,whichwouldbeofgreatsignificancetothefuturelarge-scaleremediationofcadmiumcontaminatedsourcewater.cadmiumpollution;processingtechnology;adsorptionmethod;coagulationsedimentationmethod---------------------