The　Mn-Ni/TiO2　catalyst　was　prepared　by　co-precipitation　method　and　investigated　for　the　low-temperature　selective　catalytic　reduction　(SCR)　of　NO　with　NH3　in　this　work,　and　Mn-Ni/TiO2　catalysts　were　prepared　by　different　precipitants　respectively　such　as　sodium　hydroxide,　carbamide,　ammonia　or　hydrogen　peroxide.　The　microstructure　and　performance　of　catalysts　were　investigated.　The　activitiesof　catalysts　prepared　by　different　precipitants　were　studied　in　the　temperature　range　90-350.　The　results　show　that　Mn-Ni/TiO2　catalyst　prepared　by　CO(NH2)2　-NH3·H2　O-H2　O2　compound　precipitant　has　an　extraordinary　performance　even　at　the　low　temperature　of　120.　H2　-TPR　results　show　the　peak　positions　shift　to　lower　temperatures,　standing　for　the　reduction　potential　of　MnOx　species　is　increased　compared　to　those　of　Mn/TiO2　catalysts.　The　interaction　of　Ni　and　Mn　atoms　is　beneficial　to　an　enhancement　of　the　oxygen　mobility　due　to　CO(NH2)2　-NH3·H2　O-H2　O2　as　precipitant.　It　is　worth　noting　that　the　low　temperature　peak　area　increased　by　adding　hydrogen　peroxide　as　precipitant.　NH3　-TPD　results　illustrat　that　for　the　Mn/TiO2　and　Mn-Ni/TiO2　catalysts　which　are　attributed　to　NH3　desorbed　by　weak　acid　sites　and　Brønsted　acid　sites.　©　2018　Trans　Tech　Publications,　Switzerland.