The　objective　of　this　research　are　to　isolate　the　pigment-protein　complexes　from　chlorella　and　evaluate　the　antioxidant　activities.　Chlorella　cells　were　broken　by　the　ultrasonic　wave　in　ice　bath　and　the　thylakoids　were　collected　by　ammonium　sulfate　precipitation.　The　pigment-protein　complexes　were　extracted　with　phosphate　buffer　containing　1%　of　CHAPS.　The　lutein　content　of　the　complexes　was　analyzed　by　HPLC,　the　chlorophyll　content　was　determined　by　spectrophotometry　and　BCA　assay　was　employed　to　analyze　the　protein　content.　Results　showed　that　the　pigment-protein　complexes　of　chlorella　possessed　a　lutein:Chl:protein　ratio　of　about　12.49:7.18:100　(m/m/m).　The　half　maximal　effective　concentrations　of　the　complexes　against　superoxide　anion　radical　and　DPPH　radical　were　294　μg/mL　and　422　μg/mL　respectively.　The　ferrous　ion-chelating　rate　could　reach　30%　when　the　concentration　of　the　complexes　reach　1000　μg/mL.　The　reducing　power　of　the　complexes　was　dose-dependent　with　concentration　of　200~1000　μg/mL.　When　the　concentration　of　complexes　reach　600　μg/mL,　the　lipid　peroxidation　could　be　completely　inhibited.　©　2017,　Editorial　Office　of　Journal　of　CIFST.　All　right　reserved.