Bunsen　beakers　are　adopted　to　the　experiment.　The　resource　water　including　manganese　of　the　experiment　is　configured　by　manpower,　then　added　with　different　quantity　of　potassium　permanganate　and　coagulant,　at　different　time　of　potassium　permanganate.　Manganese　concentration　of　the　above　water　is　measured　after　coagulation　and　sedimentation　on　different　conditions.　The　results　indicate　that,　at　the　right　adding　time　the　removal　rate　of　manganese　is　90.6%-99.0%,　when　the　equivalent　proportion　of　potassium　permanganate　is　80%-100%;　The　nature　organic　matter　has　some　effect　on　decreasing　the　removal　of　manganese.