A　novel　continuous-flow　combined　process　of　partial　nitrification,　Anammox　(PN/A)　and　partial　denitrification-Anammox　(PD/A)　was　established　to　achieve　enhanced　nitrogen　removal　from　landfill　leachate.　The　NH4+-N　transformation　rate　and　NO2--N　accumulation　rate　in　the　PN　reactor　reached　93.4%　and　91.5%,　respectively.　The　nitrite　generated　from　the　PN　reactor　was　combined　with　influent　(38%)　and　fed　into　the　Anammox　reactor.　The　nitrate　produced　in　the　Anammox　reactor　was　then　discharged　to　PD/A　reactor,　where　nitrate　was　transformed　to　nitrite　and　removed　via　Anammox.　Under　a　COD/NO3--N　ratio　of　4.0,　the　NO3--N-to-NO2-N　transformation　ratio　(NTR)　and　Anammox　contribution　rate　reached　60.4%　and　57.1%　in　PD/A　reactor.　The　final　effluent　TN　concentration　was　15.7　mg/L,　and　the　efficiency　of　TN　removal　could　reach　98.8%.　By　combining　PN/A　with　PD/A,　enhanced　nitrogen　removal　from　landfill　leachate　was　achieved　successfully　with　an　external　carbon　source　addition　(COD/NH4+-N)　of　0.28.