A　static　experiment　was　carried　out　to　evaluate　trace　cadmium(II)　removal　from　water　by　two　kinds　of　manganese　coagulants,　hydrous　manganese　dioxide　(HMO)　and　ferric　manganese　coagulant　(HFMO).　The　effects　of　turbidity,　initial　concentration　of　cadmium,　coagulation　time　and　different　waters　on　the　cadmium　removal　were　investigated.　The　results　showed　that　both　HMO　and　HFMO　could　eliminate　cadmium　quickly　from　water,　and　the　effectiveness　of　cadmium　removed　by　HMO　was　better　than　that　by　HFMO.　When　pH=6.72,　the　Cd(II)　initial　concentration　was　1　mg/L　and　the　dosage　of　HMO　was　20　mg/L,　the　removal　rate　of　cadmium　reached　85.04%.　As　for　HFMO,　when　pH=8.03,　the　removal　rate　of　cadmium　was　only　53.23%.　HMO　performed　better　than　HFMO　on　removal　of　cadmium　and　turbidity,　when　two　manganese　coagulants　were　used　to　treat　the　raw　water　of　Jingmi　canal　of　Beijing.